int privkey_decrypt(struct privkey* pkey, const unsigned char* in, size_t inlen, unsigned char** out, size_t* outlen)
{
if(!pkey->m_decryptinit) m_privkey_decryptinit(pkey);
int ret=0;
ret=EVP_PKEY_decrypt(pkey->m_keydata.m_ctx, NULL, outlen, in, inlen);
if(ret<=0)
{
fprintf(stderr, "Failed to get output buffer length\n");
return -1;
}
else
{
*out=(unsigned char*)malloc(*outlen);
if(!*out)
{
fprintf(stderr, "Failed to allocate output buffer\n");
return -1;
}
ret=EVP_PKEY_decrypt(pkey->m_keydata.m_ctx, *out, outlen, in, inlen);
if(ret<=0)
{
fprintf(stderr, "Failed to decrypt\n");
return -1;
}
}
return 0;
}
static int pkcs7_decrypt_rinfo(unsigned char **pek, int *peklen,
PKCS7_RECIP_INFO *ri, EVP_PKEY *pkey)
{
EVP_PKEY_CTX *pctx = NULL;
unsigned char *ek = NULL;
size_t eklen;
int ret = -1;
pctx = EVP_PKEY_CTX_new(pkey, NULL);
if (!pctx)
return -1;
if (EVP_PKEY_decrypt_init(pctx) <= 0)
goto err;
if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DECRYPT,
EVP_PKEY_CTRL_PKCS7_DECRYPT, 0, ri) <= 0) {
PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, PKCS7_R_CTRL_ERROR);
goto err;
}
if (EVP_PKEY_decrypt(pctx, NULL, &eklen,
ri->enc_key->data, ri->enc_key->length) <= 0)
goto err;
ek = OPENSSL_malloc(eklen);
if (ek == NULL) {
PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, ERR_R_MALLOC_FAILURE);
goto err;
}
if (EVP_PKEY_decrypt(pctx, ek, &eklen,
ri->enc_key->data, ri->enc_key->length) <= 0) {
ret = 0;
PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, ERR_R_EVP_LIB);
goto err;
}
ret = 1;
if (*pek) {
OPENSSL_cleanse(*pek, *peklen);
OPENSSL_free(*pek);
}
*pek = ek;
*peklen = eklen;
err:
if (pctx)
EVP_PKEY_CTX_free(pctx);
if (!ret && ek)
OPENSSL_free(ek);
return ret;
}
static int
do_keyop(EVP_PKEY_CTX * ctx, int pkey_op,
unsigned char *out, size_t * poutlen,
unsigned char *in, size_t inlen)
{
int rv = 0;
switch (pkey_op) {
case EVP_PKEY_OP_VERIFYRECOVER:
rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
break;
case EVP_PKEY_OP_SIGN:
rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
break;
case EVP_PKEY_OP_ENCRYPT:
rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
break;
case EVP_PKEY_OP_DECRYPT:
rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
break;
case EVP_PKEY_OP_DERIVE:
rv = EVP_PKEY_derive(ctx, out, poutlen);
break;
}
return rv;
}
/* 7.3.32 */
int SAF_ImportEncedKey(
void *hSymmKeyObj,
unsigned char *pucSymmKey,
unsigned int uiSymmKeyLen,
void **phKeyHandle)
{
SAF_KEY *hkey = NULL;
SAF_SYMMKEYOBJ *hobj = (SAF_SYMMKEYOBJ *)hSymmKeyObj;
EVP_PKEY *pkey = NULL;
EVP_PKEY_CTX *pctx = NULL;
char key_id[1024];
/*
snprintf(key_id, sizeof(key_id), "%s.enc", hobj->pucContainerName);
*/
if (!(pkey = ENGINE_load_private_key(hobj->app->engine, key_id, NULL, NULL))
|| !(pctx = EVP_PKEY_CTX_new(pkey, hobj->app->engine))
|| EVP_PKEY_decrypt_init(pctx) <= 0
|| EVP_PKEY_decrypt(pctx, hkey->key, &hkey->keylen, pucSymmKey, uiSymmKeyLen) <= 0) {
goto end;
}
end:
return 0;
}
int EVP_PKEY_decrypt_old(unsigned char *out, const unsigned char *in, int inlen,
EVP_PKEY *pkey)
{
int ret = 0;
EVP_PKEY_CTX *ctx = NULL;
size_t outlen;
if (pkey->type == EVP_PKEY_RSA) {
return ossl_EVP_PKEY_decrypt_old(out, in, inlen, pkey);
}
if (!(ctx = EVP_PKEY_CTX_new(pkey, NULL))) {
return 0;
}
if (!EVP_PKEY_decrypt_init(ctx)) {
goto end;
}
if (!EVP_PKEY_decrypt(ctx, out, &outlen, in, inlen)) {
goto end;
}
ret = (int)outlen;
end:
EVP_PKEY_CTX_free(ctx);
return ret;
}
static int cms_RecipientInfo_ktri_decrypt(CMS_ContentInfo *cms,
CMS_RecipientInfo *ri)
{
CMS_KeyTransRecipientInfo *ktri = ri->d.ktri;
unsigned char *ek = NULL;
int eklen;
int ret = 0;
CMS_EncryptedContentInfo *ec;
ec = cms->d.envelopedData->encryptedContentInfo;
if (ktri->pkey == NULL)
{
CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT,
CMS_R_NO_PRIVATE_KEY);
return 0;
}
eklen = EVP_PKEY_size(ktri->pkey);
ek = OPENSSL_malloc(eklen);
if (ek == NULL)
{
CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT,
ERR_R_MALLOC_FAILURE);
goto err;
}
eklen = EVP_PKEY_decrypt(ek,
ktri->encryptedKey->data,
ktri->encryptedKey->length, ktri->pkey);
if (eklen <= 0)
{
CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, CMS_R_CMS_LIB);
goto err;
}
ret = 1;
if (ec->key)
{
OPENSSL_cleanse(ec->key, ec->keylen);
OPENSSL_free(ec->key);
}
ec->key = ek;
ec->keylen = eklen;
err:
if (!ret && ek)
OPENSSL_free(ek);
return ret;
}
static LUA_FUNCTION(openssl_pkey_decrypt)
{
size_t dlen = 0;
EVP_PKEY *pkey = CHECK_OBJECT(1, EVP_PKEY, "openssl.evp_pkey");
const char *data = luaL_checklstring(L, 2, &dlen);
int padding = auxiliar_checkoption(L, 3, "pkcs1", sPadding, iPadding);
size_t clen = EVP_PKEY_size(pkey);
EVP_PKEY_CTX *ctx = NULL;
int ret = 0;
if (pkey->type != EVP_PKEY_RSA && pkey->type != EVP_PKEY_RSA2) {
luaL_argerror(L, 2, "EVP_PKEY must be of type RSA or RSA2");
return ret;
}
if (openssl_pkey_is_private(pkey))
{
ctx = EVP_PKEY_CTX_new(pkey, pkey->engine);
if (EVP_PKEY_decrypt_init(ctx) == 1)
{
if (EVP_PKEY_CTX_set_rsa_padding(ctx, padding) == 1)
{
byte* buf = malloc(clen);
if (EVP_PKEY_decrypt(ctx, buf, &clen, (const unsigned char*)data, dlen) == 1)
{
lua_pushlstring(L, (const char*)buf, clen);
ret = 1;
}
else
ret = openssl_pushresult(L, 0);
free(buf);
}
else
ret = openssl_pushresult(L, 0);
}
else
ret = openssl_pushresult(L, 0);
EVP_PKEY_CTX_free(ctx);
}
else
{
luaL_argerror(L, 2, "EVP_PKEY must be private key");
}
return ret;
}
EXPORT_C int EVP_OpenInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type,
const unsigned char *ek, int ekl, const unsigned char *iv,
EVP_PKEY *priv)
{
unsigned char *key=NULL;
int i,size=0,ret=0;
if(type) {
EVP_CIPHER_CTX_init(ctx);
if(!EVP_DecryptInit_ex(ctx,type,NULL, NULL,NULL)) return 0;
}
if(!priv) return 1;
if (priv->type != EVP_PKEY_RSA)
{
EVPerr(EVP_F_EVP_OPENINIT,EVP_R_PUBLIC_KEY_NOT_RSA);
goto err;
}
size=RSA_size(priv->pkey.rsa);
key=(unsigned char *)OPENSSL_malloc(size+2);
if (key == NULL)
{
/* ERROR */
EVPerr(EVP_F_EVP_OPENINIT,ERR_R_MALLOC_FAILURE);
goto err;
}
i=EVP_PKEY_decrypt(key,ek,ekl,priv);
if ((i <= 0) || !EVP_CIPHER_CTX_set_key_length(ctx, i))
{
/* ERROR */
goto err;
}
if(!EVP_DecryptInit_ex(ctx,NULL,NULL,key,iv)) goto err;
ret=1;
err:
if (key != NULL) OPENSSL_cleanse(key,size);
OPENSSL_free(key);
return(ret);
}
CK_RV PKCS11_Encryption_OpenSSL::DecryptUpdate(Cryptoki_Session_Context* pSessionCtx, CK_BYTE_PTR pEncryptedPart, CK_ULONG ulEncryptedPartLen, CK_BYTE_PTR pPart, CK_ULONG_PTR pulPartLen)
{
OPENSSL_HEADER();
OpenSSLEncryptData *pDec;
if(pSessionCtx == NULL || pSessionCtx->DecryptionCtx == NULL) return CKR_SESSION_CLOSED;
pDec = (OpenSSLEncryptData*)pSessionCtx->DecryptionCtx;
if(pDec->IsSymmetric)
{
int outLen = *pulPartLen;
OPENSSL_CHECKRESULT(EVP_DecryptUpdate((EVP_CIPHER_CTX*)pDec->Key->ctx, pPart, &outLen, pEncryptedPart, ulEncryptedPartLen));
*pulPartLen = outLen;
}
else
{
size_t outLen = *pulPartLen;
OPENSSL_CHECKRESULT(EVP_PKEY_decrypt((EVP_PKEY_CTX*)pDec->Key->ctx, pPart, &outLen, pEncryptedPart, ulEncryptedPartLen));
*pulPartLen = outLen;
}
OPENSSL_CLEANUP();
if(retVal != CKR_OK)
{
TINYCLR_SSL_FREE(pDec);
pSessionCtx->DecryptionCtx = NULL;
}
OPENSSL_RETURN();
}
int main()
{
int ret = -1;
int verbose = 0;
BIO *out = NULL;
int id = EVP_PKEY_SM2;
const EVP_MD *md = EVP_sm3();
ENGINE *engine = NULL;
EVP_PKEY_CTX *pkctx = NULL;
EVP_PKEY *pkey = NULL;
EVP_MD_CTX *mdctx = NULL;
EVP_CIPHER_CTX *cpctx = NULL;
unsigned char dgst[EVP_MAX_MD_SIZE] = "hello world";
size_t dgstlen = 32;
unsigned char sig[256];
size_t siglen = sizeof(sig);
unsigned char msg[] = "hello world this is the message";
size_t msglen = sizeof(msg);
unsigned char cbuf[512];
size_t cbuflen = sizeof(cbuf);
unsigned char mbuf[512];
size_t mbuflen = sizeof(mbuf);
int len;
unsigned int ulen;
ERR_load_crypto_strings();
out = BIO_new_fp(stdout, BIO_NOCLOSE);
if (!(pkctx = EVP_PKEY_CTX_new_id(id, engine))) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
if (!EVP_PKEY_keygen_init(pkctx)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
if (!EVP_PKEY_keygen(pkctx, &pkey)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
EVP_PKEY_CTX_free(pkctx);
if (0) {
EVP_PKEY_print_public(out, pkey, 4, NULL);
BIO_printf(out, "\n");
EVP_PKEY_print_private(out, pkey, 4, NULL);
BIO_printf(out, "\n");
}
if (!(pkctx = EVP_PKEY_CTX_new(pkey, engine))) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
/* EVP_PKEY_sign() */
if (!EVP_PKEY_sign_init(pkctx)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
bzero(sig, sizeof(sig));
siglen = sizeof(sig);
dgstlen = 32;
if (!EVP_PKEY_sign(pkctx, sig, &siglen, dgst, dgstlen)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
if (verbose) {
size_t i;
printf("signature (%zu bytes) = ", siglen);
for (i = 0; i < siglen; i++) {
printf("%02X", sig[i]);
}
printf("\n");
}
if (!EVP_PKEY_verify_init(pkctx)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
if (EVP_PKEY_verify(pkctx, sig, siglen, dgst, dgstlen) != SM2_VERIFY_SUCCESS) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
if (verbose) {
printf("signature verification success!\n");
}
/* EVP_PKEY_encrypt() */
if (!EVP_PKEY_encrypt_init(pkctx)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
cbuflen = sizeof(cbuf);
if (!EVP_PKEY_encrypt(pkctx, cbuf, &cbuflen, msg, msglen)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
if (verbose) {
size_t i;
printf("ciphertext (%zu bytes) = ", cbuflen);
for (i = 0; i < cbuflen; i++) {
printf("%02X", cbuf[i]);
}
printf("\n");
}
if (!EVP_PKEY_decrypt_init(pkctx)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
bzero(mbuf, sizeof(mbuf));
mbuflen = sizeof(mbuf);
if (!EVP_PKEY_decrypt(pkctx, mbuf, &mbuflen, cbuf, cbuflen)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
if (verbose) {
printf("original message = %s\n", msg);
printf("decrypted message = %s\n", mbuf);
}
/* EVP_PKEY_encrypt_old */
if ((len = EVP_PKEY_encrypt_old(cbuf, msg, (int)msglen, pkey)) <= 0) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
if (verbose) {
int i;
printf("ciphertext (%d bytes) = ", len);
for (i = 0; i < len; i++) {
printf("%02X", cbuf[i]);
}
printf("\n");
}
bzero(mbuf, sizeof(mbuf));
if ((len = EVP_PKEY_decrypt_old(mbuf, cbuf, len, pkey)) <= 0) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
if (verbose) {
printf("original message = %s\n", msg);
printf("decrypted message = %s\n", mbuf);
}
if (!(mdctx = EVP_MD_CTX_create())) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
/* EVP_SignInit_ex/Update/Final_ex */
if (!EVP_SignInit_ex(mdctx, EVP_sm3(), engine)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
if (!EVP_SignUpdate(mdctx, msg, msglen)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
if (!EVP_SignFinal(mdctx, sig, &ulen, pkey)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
siglen = ulen;
if (verbose) {
size_t i;
printf("signature (%zu bytes) = ", siglen);
for (i = 0; i < siglen; i++) {
printf("%02X", sig[i]);
}
printf("\n");
}
if (!EVP_VerifyInit_ex(mdctx, EVP_sm3(), engine)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
if (!EVP_VerifyUpdate(mdctx, msg, msglen)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
if (EVP_VerifyFinal(mdctx, sig, ulen, pkey) != SM2_VERIFY_SUCCESS) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
/* EVP_DigestSignInit/Update/Final() */
// FIXME: return values might be different, not just 1 or 0
if (!EVP_DigestSignInit(mdctx, &pkctx, md, engine, pkey)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
if (!EVP_DigestSignUpdate(mdctx, msg, msglen)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
siglen = sizeof(sig);
if (!EVP_DigestSignFinal(mdctx, sig, &siglen)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
pkctx = NULL;
if (!EVP_DigestVerifyInit(mdctx, &pkctx, md, engine, pkey)) {
ERR_print_errors_fp(stderr);
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
if (!EVP_DigestVerifyUpdate(mdctx, msg, msglen)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
if (!EVP_DigestVerifyFinal(mdctx, sig, siglen)) {
fprintf(stderr, "error: %s %d\n", __FILE__, __LINE__);
goto end;
}
/* EVP_SealInit/Update/Final() EVP_OpenInit/Update/Final() */
/*
EVP_PKEY *pk[NUM_PKEYS] = {0};
unsigned char iv[16];
unsigned char ek[NUM_PKEYS][256];
int eklen[NUM_PKEYS];
RAND_pseudo_bytes(iv, sizeof(iv));
int i;
for (i = 0; i < NUM_PKEYS; i++) {
}
if (!(cpctx = EVP_CIPHER_CTX_new())) {
goto end;
}
if (!EVP_SealInit(cpctx, cipher, ek, &ekl, iv, pubk, npubk)) {
goto end;
}
if (!EVP_SealUpdate(cpctx, msg, msglen)) {
goto end;
}
if (!EVP_SealFinal(cpctx, cbuf, (int *)&cbuflen)) {
goto end;
}
*/
printf("test success!\n");
ret = 1;
end:
ERR_print_errors_fp(stderr);
return ret;
}
/* int */
BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
{
int i,j;
BIO *out=NULL,*btmp=NULL,*etmp=NULL,*bio=NULL;
unsigned char *tmp=NULL;
X509_ALGOR *xa;
ASN1_OCTET_STRING *data_body=NULL;
const EVP_MD *evp_md;
const EVP_CIPHER *evp_cipher=NULL;
EVP_CIPHER_CTX *evp_ctx=NULL;
X509_ALGOR *enc_alg=NULL;
STACK_OF(X509_ALGOR) *md_sk=NULL;
STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
X509_ALGOR *xalg=NULL;
PKCS7_RECIP_INFO *ri=NULL;
i=OBJ_obj2nid(p7->type);
p7->state=PKCS7_S_HEADER;
switch (i)
{
case NID_pkcs7_signed:
data_body=PKCS7_get_octet_string(p7->d.sign->contents);
md_sk=p7->d.sign->md_algs;
break;
case NID_pkcs7_signedAndEnveloped:
rsk=p7->d.signed_and_enveloped->recipientinfo;
md_sk=p7->d.signed_and_enveloped->md_algs;
data_body=p7->d.signed_and_enveloped->enc_data->enc_data;
enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm;
evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm);
if (evp_cipher == NULL)
{
PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
goto err;
}
xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
break;
case NID_pkcs7_enveloped:
rsk=p7->d.enveloped->recipientinfo;
enc_alg=p7->d.enveloped->enc_data->algorithm;
data_body=p7->d.enveloped->enc_data->enc_data;
evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm);
if (evp_cipher == NULL)
{
PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
goto err;
}
xalg=p7->d.enveloped->enc_data->algorithm;
break;
default:
PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
goto err;
}
/* We will be checking the signature */
if (md_sk != NULL)
{
for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
{
xa=sk_X509_ALGOR_value(md_sk,i);
if ((btmp=BIO_new(BIO_f_md())) == NULL)
{
PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
goto err;
}
j=OBJ_obj2nid(xa->algorithm);
evp_md=EVP_get_digestbynid(j);
if (evp_md == NULL)
{
PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE);
goto err;
}
BIO_set_md(btmp,evp_md);
if (out == NULL)
out=btmp;
else
BIO_push(out,btmp);
btmp=NULL;
}
}
if (evp_cipher != NULL)
{
#if 0
unsigned char key[EVP_MAX_KEY_LENGTH];
unsigned char iv[EVP_MAX_IV_LENGTH];
unsigned char *p;
int keylen,ivlen;
int max;
X509_OBJECT ret;
#endif
int jj;
if ((etmp=BIO_new(BIO_f_cipher())) == NULL)
{
PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
goto err;
}
/* It was encrypted, we need to decrypt the secret key
* with the private key */
/* Find the recipientInfo which matches the passed certificate
* (if any)
*/
if (pcert) {
for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) {
ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
if (!pkcs7_cmp_ri(ri, pcert))
break;
ri=NULL;
}
if (ri == NULL) {
PKCS7err(PKCS7_F_PKCS7_DATADECODE,
PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE);
goto err;
}
}
jj=EVP_PKEY_size(pkey);
tmp=(unsigned char *)OPENSSL_malloc(jj+10);
if (tmp == NULL)
{
PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_MALLOC_FAILURE);
goto err;
}
/* If we haven't got a certificate try each ri in turn */
if (pcert == NULL)
{
for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
{
ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
jj=EVP_PKEY_decrypt(tmp,
M_ASN1_STRING_data(ri->enc_key),
M_ASN1_STRING_length(ri->enc_key),
pkey);
if (jj > 0)
break;
ERR_clear_error();
ri = NULL;
}
if (ri == NULL)
{
PKCS7err(PKCS7_F_PKCS7_DATADECODE,
PKCS7_R_NO_RECIPIENT_MATCHES_KEY);
goto err;
}
}
else
{
jj=EVP_PKEY_decrypt(tmp,
M_ASN1_STRING_data(ri->enc_key),
M_ASN1_STRING_length(ri->enc_key), pkey);
if (jj <= 0)
{
PKCS7err(PKCS7_F_PKCS7_DATADECODE,
ERR_R_EVP_LIB);
goto err;
}
}
evp_ctx=NULL;
BIO_get_cipher_ctx(etmp,&evp_ctx);
if (EVP_CipherInit_ex(evp_ctx,evp_cipher,NULL,NULL,NULL,0) <= 0)
goto err;
if (EVP_CIPHER_asn1_to_param(evp_ctx,enc_alg->parameter) < 0)
goto err;
if (jj != EVP_CIPHER_CTX_key_length(evp_ctx)) {
/* Some S/MIME clients don't use the same key
* and effective key length. The key length is
* determined by the size of the decrypted RSA key.
*/
if(!EVP_CIPHER_CTX_set_key_length(evp_ctx, jj))
{
PKCS7err(PKCS7_F_PKCS7_DATADECODE,
PKCS7_R_DECRYPTED_KEY_IS_WRONG_LENGTH);
goto err;
}
}
if (EVP_CipherInit_ex(evp_ctx,NULL,NULL,tmp,NULL,0) <= 0)
goto err;
OPENSSL_cleanse(tmp,jj);
if (out == NULL)
out=etmp;
else
BIO_push(out,etmp);
etmp=NULL;
}
#if 1
if (PKCS7_is_detached(p7) || (in_bio != NULL))
{
bio=in_bio;
}
else
{
#if 0
bio=BIO_new(BIO_s_mem());
/* We need to set this so that when we have read all
* the data, the encrypt BIO, if present, will read
* EOF and encode the last few bytes */
BIO_set_mem_eof_return(bio,0);
if (data_body->length > 0)
BIO_write(bio,(char *)data_body->data,data_body->length);
#else
if (data_body->length > 0)
bio = BIO_new_mem_buf(data_body->data,data_body->length);
else {
bio=BIO_new(BIO_s_mem());
BIO_set_mem_eof_return(bio,0);
}
#endif
}
BIO_push(out,bio);
bio=NULL;
#endif
if (0)
{
err:
if (out != NULL) BIO_free_all(out);
if (btmp != NULL) BIO_free_all(btmp);
if (etmp != NULL) BIO_free_all(etmp);
if (bio != NULL) BIO_free_all(bio);
out=NULL;
}
if (tmp != NULL)
OPENSSL_free(tmp);
return(out);
}
static int cms_RecipientInfo_ktri_decrypt(CMS_ContentInfo *cms,
CMS_RecipientInfo *ri)
{
CMS_KeyTransRecipientInfo *ktri = ri->d.ktri;
EVP_PKEY_CTX *pctx = NULL;
unsigned char *ek = NULL;
size_t eklen;
int ret = 0;
CMS_EncryptedContentInfo *ec;
ec = cms->d.envelopedData->encryptedContentInfo;
if (ktri->pkey == NULL) {
CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, CMS_R_NO_PRIVATE_KEY);
return 0;
}
pctx = EVP_PKEY_CTX_new(ktri->pkey, NULL);
if (!pctx)
return 0;
if (EVP_PKEY_decrypt_init(pctx) <= 0)
goto err;
if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DECRYPT,
EVP_PKEY_CTRL_CMS_DECRYPT, 0, ri) <= 0) {
CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, CMS_R_CTRL_ERROR);
goto err;
}
if (EVP_PKEY_decrypt(pctx, NULL, &eklen,
ktri->encryptedKey->data,
ktri->encryptedKey->length) <= 0)
goto err;
ek = OPENSSL_malloc(eklen);
if (ek == NULL) {
CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, ERR_R_MALLOC_FAILURE);
goto err;
}
if (EVP_PKEY_decrypt(pctx, ek, &eklen,
ktri->encryptedKey->data,
ktri->encryptedKey->length) <= 0) {
CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, CMS_R_CMS_LIB);
goto err;
}
ret = 1;
if (ec->key) {
OPENSSL_cleanse(ec->key, ec->keylen);
OPENSSL_free(ec->key);
}
ec->key = ek;
ec->keylen = eklen;
err:
if (pctx)
EVP_PKEY_CTX_free(pctx);
if (!ret && ek)
OPENSSL_free(ek);
return ret;
}
static bool
alg_wrap_unw(const jose_hook_alg_t *alg, jose_cfg_t *cfg, const json_t *jwe,
const json_t *rcp, const json_t *jwk, json_t *cek)
{
openssl_auto(EVP_PKEY_CTX) *epc = NULL;
openssl_auto(EVP_PKEY) *key = NULL;
const uint8_t *tt = NULL;
const EVP_MD *md = NULL;
uint8_t *ct = NULL;
uint8_t *pt = NULL;
uint8_t *rt = NULL;
bool ret = false;
size_t ctl = 0;
size_t ptl = 0;
size_t rtl = 0;
size_t ttl = 0;
int pad = 0;
switch (str2enum(alg->name, NAMES, NULL)) {
case 0: pad = RSA_PKCS1_PADDING; md = EVP_sha1(); break;
case 1: pad = RSA_PKCS1_OAEP_PADDING; md = EVP_sha1(); break;
case 2: pad = RSA_PKCS1_OAEP_PADDING; md = EVP_sha256(); break;
default: return false;
}
key = jose_openssl_jwk_to_EVP_PKEY(cfg, jwk);
if (!key || EVP_PKEY_base_id(key) != EVP_PKEY_RSA)
goto egress;
ctl = jose_b64_dec(json_object_get(rcp, "encrypted_key"), NULL, 0);
if (ctl == SIZE_MAX)
goto egress;
ct = malloc(ctl);
if (!ct)
goto egress;
if (jose_b64_dec(json_object_get(rcp, "encrypted_key"), ct, ctl) != ctl)
goto egress;
ptl = ctl;
pt = malloc(ptl);
if (!pt)
goto egress;
epc = EVP_PKEY_CTX_new(key, NULL);
if (!epc)
goto egress;
if (EVP_PKEY_decrypt_init(epc) <= 0)
goto egress;
if (EVP_PKEY_CTX_set_rsa_padding(epc, pad) <= 0)
goto egress;
if (pad == RSA_PKCS1_OAEP_PADDING) {
if (EVP_PKEY_CTX_set_rsa_oaep_md(epc, md) <= 0)
return false;
if (EVP_PKEY_CTX_set_rsa_mgf1_md(epc, md) <= 0)
goto egress;
}
/* Handle MMA Attack as prescribed by RFC 3218, always generate a
* random buffer of appropriate length so that the same operations
* are performed whether decrypt succeeds or not, in an attempt to
* foil timing attacks */
rtl = ptl;
rt = malloc(rtl);
if (!rt)
goto egress;
if (RAND_bytes(rt, rtl) <= 0)
goto egress;
ret |= EVP_PKEY_decrypt(epc, pt, &ptl, ct, ctl) > 0;
ttl = ret ? ptl : rtl;
tt = ret ? pt : rt;
ret |= pad == RSA_PKCS1_PADDING;
if (json_object_set_new(cek, "k", jose_b64_enc(tt, ttl)) < 0)
ret = false;
egress:
if (pt) {
OPENSSL_cleanse(pt, ptl);
free(pt);
}
if (rt) {
OPENSSL_cleanse(rt, rtl);
free(rt);
}
free(ct);
return ret;
}
static int test_EVP_SM2(void)
{
int ret = 0;
EVP_PKEY *pkey = NULL;
EVP_PKEY *params = NULL;
EVP_PKEY_CTX *pctx = NULL;
EVP_PKEY_CTX *kctx = NULL;
EVP_PKEY_CTX *sctx = NULL;
size_t sig_len = 0;
unsigned char *sig = NULL;
EVP_MD_CTX *md_ctx = NULL;
EVP_MD_CTX *md_ctx_verify = NULL;
EVP_PKEY_CTX *cctx = NULL;
uint8_t ciphertext[128];
size_t ctext_len = sizeof(ciphertext);
uint8_t plaintext[8];
size_t ptext_len = sizeof(plaintext);
uint8_t sm2_id[] = {1, 2, 3, 4, 'l', 'e', 't', 't', 'e', 'r'};
pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_EC, NULL);
if (!TEST_ptr(pctx))
goto done;
if (!TEST_true(EVP_PKEY_paramgen_init(pctx) == 1))
goto done;
if (!TEST_true(EVP_PKEY_CTX_set_ec_paramgen_curve_nid(pctx, NID_sm2)))
goto done;
if (!TEST_true(EVP_PKEY_paramgen(pctx, ¶ms)))
goto done;
kctx = EVP_PKEY_CTX_new(params, NULL);
if (!TEST_ptr(kctx))
goto done;
if (!TEST_true(EVP_PKEY_keygen_init(kctx)))
goto done;
if (!TEST_true(EVP_PKEY_keygen(kctx, &pkey)))
goto done;
if (!TEST_true(EVP_PKEY_set_alias_type(pkey, EVP_PKEY_SM2)))
goto done;
if (!TEST_ptr(md_ctx = EVP_MD_CTX_new()))
goto done;
if (!TEST_ptr(md_ctx_verify = EVP_MD_CTX_new()))
goto done;
if (!TEST_ptr(sctx = EVP_PKEY_CTX_new(pkey, NULL)))
goto done;
EVP_MD_CTX_set_pkey_ctx(md_ctx, sctx);
EVP_MD_CTX_set_pkey_ctx(md_ctx_verify, sctx);
if (!TEST_int_gt(EVP_PKEY_CTX_set1_id(sctx, sm2_id, sizeof(sm2_id)), 0))
goto done;
if (!TEST_true(EVP_DigestSignInit(md_ctx, NULL, EVP_sm3(), NULL, pkey)))
goto done;
if(!TEST_true(EVP_DigestSignUpdate(md_ctx, kMsg, sizeof(kMsg))))
goto done;
/* Determine the size of the signature. */
if (!TEST_true(EVP_DigestSignFinal(md_ctx, NULL, &sig_len)))
goto done;
if (!TEST_size_t_eq(sig_len, (size_t)EVP_PKEY_size(pkey)))
goto done;
if (!TEST_ptr(sig = OPENSSL_malloc(sig_len)))
goto done;
if (!TEST_true(EVP_DigestSignFinal(md_ctx, sig, &sig_len)))
goto done;
/* Ensure that the signature round-trips. */
if (!TEST_true(EVP_DigestVerifyInit(md_ctx_verify, NULL, EVP_sm3(), NULL, pkey)))
goto done;
if (!TEST_true(EVP_DigestVerifyUpdate(md_ctx_verify, kMsg, sizeof(kMsg))))
goto done;
if (!TEST_true(EVP_DigestVerifyFinal(md_ctx_verify, sig, sig_len)))
goto done;
/* now check encryption/decryption */
if (!TEST_ptr(cctx = EVP_PKEY_CTX_new(pkey, NULL)))
goto done;
if (!TEST_true(EVP_PKEY_encrypt_init(cctx)))
goto done;
if (!TEST_true(EVP_PKEY_encrypt(cctx, ciphertext, &ctext_len, kMsg, sizeof(kMsg))))
goto done;
if (!TEST_true(EVP_PKEY_decrypt_init(cctx)))
goto done;
if (!TEST_true(EVP_PKEY_decrypt(cctx, plaintext, &ptext_len, ciphertext, ctext_len)))
goto done;
if (!TEST_true(ptext_len == sizeof(kMsg)))
goto done;
if (!TEST_true(memcmp(plaintext, kMsg, sizeof(kMsg)) == 0))
goto done;
ret = 1;
done:
EVP_PKEY_CTX_free(pctx);
EVP_PKEY_CTX_free(kctx);
EVP_PKEY_CTX_free(sctx);
EVP_PKEY_CTX_free(cctx);
EVP_PKEY_free(pkey);
EVP_PKEY_free(params);
EVP_MD_CTX_free(md_ctx);
EVP_MD_CTX_free(md_ctx_verify);
OPENSSL_free(sig);
return ret;
}
/* int */
BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
{
int i,j;
BIO *out=NULL,*btmp=NULL,*etmp=NULL,*bio=NULL;
unsigned char *tmp=NULL;
X509_ALGOR *xa;
ASN1_OCTET_STRING *data_body=NULL;
const EVP_MD *evp_md;
const EVP_CIPHER *evp_cipher=NULL;
EVP_CIPHER_CTX *evp_ctx=NULL;
X509_ALGOR *enc_alg=NULL;
STACK_OF(X509_ALGOR) *md_sk=NULL;
STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
PKCS7_RECIP_INFO *ri=NULL;
if (p7 == NULL) {
PKCS7err(PKCS7_F_PKCS7_DATADECODE, PKCS7_R_INVALID_NULL_POINTER);
return NULL;
}
if (p7->d.ptr == NULL) {
PKCS7err(PKCS7_F_PKCS7_DATADECODE, PKCS7_R_NO_CONTENT);
return NULL;
}
i=OBJ_obj2nid(p7->type);
p7->state=PKCS7_S_HEADER;
switch (i)
{
case NID_pkcs7_signed:
/*
* p7->d.sign->contents is a PKCS7 structure consisting of a contentType
* field and optional content.
* data_body is NULL if that structure has no (=detached) content
* or if the contentType is wrong (i.e., not "data").
*/
data_body=PKCS7_get_octet_string(p7->d.sign->contents);
md_sk=p7->d.sign->md_algs;
break;
case NID_pkcs7_signedAndEnveloped:
rsk=p7->d.signed_and_enveloped->recipientinfo;
md_sk=p7->d.signed_and_enveloped->md_algs;
/* data_body is NULL if the optional EncryptedContent is missing. */
data_body=p7->d.signed_and_enveloped->enc_data->enc_data;
enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm;
evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm);
if (evp_cipher == NULL)
{
PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
goto err;
}
break;
case NID_pkcs7_enveloped:
rsk=p7->d.enveloped->recipientinfo;
enc_alg=p7->d.enveloped->enc_data->algorithm;
/* data_body is NULL if the optional EncryptedContent is missing. */
data_body=p7->d.enveloped->enc_data->enc_data;
evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm);
if (evp_cipher == NULL)
{
PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
goto err;
}
break;
default:
PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
goto err;
}
/* Detached content must be supplied via in_bio instead. */
if (data_body == NULL && in_bio == NULL) {
PKCS7err(PKCS7_F_PKCS7_DATADECODE, PKCS7_R_NO_CONTENT);
goto err;
}
/* We will be checking the signature */
if (md_sk != NULL)
{
for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
{
xa=sk_X509_ALGOR_value(md_sk,i);
if ((btmp=BIO_new(BIO_f_md())) == NULL)
{
PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
goto err;
}
j=OBJ_obj2nid(xa->algorithm);
evp_md=EVP_get_digestbynid(j);
if (evp_md == NULL)
{
PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE);
goto err;
}
BIO_set_md(btmp,evp_md);
if (out == NULL)
out=btmp;
else
BIO_push(out,btmp);
btmp=NULL;
}
}
if (evp_cipher != NULL)
{
#if 0
unsigned char key[EVP_MAX_KEY_LENGTH];
unsigned char iv[EVP_MAX_IV_LENGTH];
unsigned char *p;
int keylen,ivlen;
int max;
X509_OBJECT ret;
#endif
unsigned char *tkey = NULL;
int tkeylen;
int jj;
if ((etmp=BIO_new(BIO_f_cipher())) == NULL)
{
PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
goto err;
}
/* It was encrypted, we need to decrypt the secret key
* with the private key */
/* Find the recipientInfo which matches the passed certificate
* (if any)
*/
if (pcert) {
for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) {
ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
if (!pkcs7_cmp_ri(ri, pcert))
break;
ri=NULL;
}
if (ri == NULL) {
PKCS7err(PKCS7_F_PKCS7_DATADECODE,
PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE);
goto err;
}
}
jj=EVP_PKEY_size(pkey);
tmp=(unsigned char *)OPENSSL_malloc(jj+10);
if (tmp == NULL)
{
PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_MALLOC_FAILURE);
goto err;
}
/* If we haven't got a certificate try each ri in turn */
if (pcert == NULL)
{
/* Temporary storage in case EVP_PKEY_decrypt
* overwrites output buffer on error.
*/
unsigned char *tmp2;
tmp2 = OPENSSL_malloc(jj);
if (!tmp2)
goto err;
jj = -1;
/* Always attempt to decrypt all cases to avoid
* leaking timing information about a successful
* decrypt.
*/
for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
{
int tret;
ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
tret=EVP_PKEY_decrypt(tmp2,
M_ASN1_STRING_data(ri->enc_key),
M_ASN1_STRING_length(ri->enc_key),
pkey);
if (tret > 0)
{
memcpy(tmp, tmp2, tret);
OPENSSL_cleanse(tmp2, tret);
jj = tret;
}
ERR_clear_error();
}
OPENSSL_free(tmp2);
}
else
{
jj=EVP_PKEY_decrypt(tmp,
M_ASN1_STRING_data(ri->enc_key),
M_ASN1_STRING_length(ri->enc_key), pkey);
ERR_clear_error();
}
evp_ctx=NULL;
BIO_get_cipher_ctx(etmp,&evp_ctx);
if (EVP_CipherInit_ex(evp_ctx,evp_cipher,NULL,NULL,NULL,0) <= 0)
goto err;
if (EVP_CIPHER_asn1_to_param(evp_ctx,enc_alg->parameter) < 0)
goto err;
/* Generate random key to counter MMA */
tkeylen = EVP_CIPHER_CTX_key_length(evp_ctx);
tkey = OPENSSL_malloc(tkeylen);
if (!tkey)
goto err;
if (EVP_CIPHER_CTX_rand_key(evp_ctx, tkey) <= 0)
goto err;
/* If we have no key use random key */
if (jj <= 0)
{
OPENSSL_free(tmp);
jj = tkeylen;
tmp = tkey;
tkey = NULL;
}
if (jj != tkeylen) {
/* Some S/MIME clients don't use the same key
* and effective key length. The key length is
* determined by the size of the decrypted RSA key.
*/
if(!EVP_CIPHER_CTX_set_key_length(evp_ctx, jj))
{
/* As MMA defence use random key instead */
OPENSSL_cleanse(tmp, jj);
OPENSSL_free(tmp);
jj = tkeylen;
tmp = tkey;
tkey = NULL;
}
}
ERR_clear_error();
if (EVP_CipherInit_ex(evp_ctx,NULL,NULL,tmp,NULL,0) <= 0)
goto err;
OPENSSL_cleanse(tmp,jj);
if (tkey)
{
OPENSSL_cleanse(tkey, tkeylen);
OPENSSL_free(tkey);
}
if (out == NULL)
out=etmp;
else
BIO_push(out,etmp);
etmp=NULL;
}
#if 1
if (in_bio != NULL)
{
bio=in_bio;
}
else
{
#if 0
bio=BIO_new(BIO_s_mem());
/* We need to set this so that when we have read all
* the data, the encrypt BIO, if present, will read
* EOF and encode the last few bytes */
BIO_set_mem_eof_return(bio,0);
if (data_body->length > 0)
BIO_write(bio,(char *)data_body->data,data_body->length);
#else
if (data_body->length > 0)
bio = BIO_new_mem_buf(data_body->data,data_body->length);
else {
bio=BIO_new(BIO_s_mem());
BIO_set_mem_eof_return(bio,0);
}
if (bio == NULL)
goto err;
#endif
}
BIO_push(out,bio);
bio=NULL;
#endif
if (0)
{
err:
if (out != NULL) BIO_free_all(out);
if (btmp != NULL) BIO_free_all(btmp);
if (etmp != NULL) BIO_free_all(etmp);
if (bio != NULL) BIO_free_all(bio);
out=NULL;
}
if (tmp != NULL)
OPENSSL_free(tmp);
return(out);
}
U8_EXPORT ssize_t u8_cryptic
(int do_encrypt,const char *cname,
const unsigned char *key,int keylen,
const unsigned char *iv,int ivlen,
u8_block_reader reader,u8_block_writer writer,
void *readstate,void *writestate,
u8_context caller)
{
if (strncasecmp(cname,"rsa",3)==0) {
ENGINE *eng=ENGINE_get_default_RSA();
EVP_PKEY _pkey, *pkey; EVP_PKEY_CTX *ctx;
int pubkeyin=(strncasecmp(cname,"rsapub",6)==0);
const unsigned char *scankey=key;
struct U8_BYTEBUF bb;
int retval=-1;
if (pubkeyin) pkey=d2i_PUBKEY(NULL,&scankey,keylen);
else pkey=d2i_PrivateKey((EVP_PKEY_RSA),NULL,&scankey,keylen);
if (!(pkey)) ctx=NULL;
else {
#if (OPENSSL_VERSION_NUMBER>=0x1000204fL)
ctx=EVP_PKEY_CTX_new(pkey,eng);
#else
ctx=EVP_PKEY_CTX_new(pkey,NULL);
#endif
}
if (ctx) {
memset(&bb,0,sizeof(bb));
bb.u8_direction=u8_output_buffer;
bb.u8_buf=bb.u8_ptr=(u8_byte *)u8_malloc(1024);
bb.u8_lim=(u8_byte *)(bb.u8_buf+1024);
bb.u8_growbuf=1;
fill_bytebuf(&bb,reader,readstate);}
if (!(ctx)) {}
else if ((pubkeyin)?
((do_encrypt)?((retval=EVP_PKEY_encrypt_init(ctx))<0):
((retval=EVP_PKEY_verify_recover_init(ctx))<0)):
((do_encrypt)?((retval=EVP_PKEY_sign_init(ctx))<0):
((retval=EVP_PKEY_decrypt_init(ctx))<0))) {}
else {
unsigned char *in=bb.u8_buf; size_t inlen=bb.u8_ptr-bb.u8_buf;
unsigned char *out=NULL; size_t outlen;
if (pubkeyin) {
if (do_encrypt) retval=EVP_PKEY_encrypt(ctx,NULL,&outlen,in,inlen);
else retval=EVP_PKEY_verify_recover(ctx,NULL,&outlen,in,inlen);}
else if (do_encrypt) retval=EVP_PKEY_sign(ctx,NULL,&outlen,in,inlen);
else retval=EVP_PKEY_decrypt(ctx,NULL,&outlen,in,inlen);
if (retval<0) {}
else if ((out=u8_malloc(outlen))==NULL) {}
else if (pubkeyin) {
if (do_encrypt) retval=EVP_PKEY_encrypt(ctx,out,&outlen,in,inlen);
else retval=EVP_PKEY_verify_recover(ctx,out,&outlen,in,inlen);}
else if (do_encrypt) retval=EVP_PKEY_sign(ctx,out,&outlen,in,inlen);
else retval=EVP_PKEY_decrypt(ctx,out,&outlen,in,inlen);
if (retval<0) {}
else retval=writer(out,outlen,writestate);
if (out) u8_free(out);}
u8_free(bb.u8_buf);
if (retval<0) {
unsigned long err=ERR_get_error(); char buf[512];
buf[0]='\0'; ERR_error_string_n(err,buf,512);
u8_seterr(u8_InternalCryptoError,OPENSSL_CRYPTIC,u8_fromlibc((char *)buf));
ERR_clear_error();}
if (ctx) EVP_PKEY_CTX_free(ctx);
if (pkey) EVP_PKEY_free(pkey);
return retval;}
else {
EVP_CIPHER_CTX ctx;
int inlen, outlen, retval=0;
ssize_t totalout=0, totalin=0;
unsigned char inbuf[1024], outbuf[1024+EVP_MAX_BLOCK_LENGTH];
const EVP_CIPHER *cipher=((cname)?(EVP_get_cipherbyname(cname)):
(EVP_aes_128_cbc()));
if (cipher) {
int needkeylen=EVP_CIPHER_key_length(cipher);
int needivlen=EVP_CIPHER_iv_length(cipher);
int blocksize=EVP_CIPHER_block_size(cipher);
if (blocksize>1024) blocksize=1024;
u8_log(CRYPTO_LOGLEVEL,OPENSSL_CRYPTIC,
" %s cipher=%s, keylen=%d/%d, ivlen=%d/%d, blocksize=%d\n",
((do_encrypt)?("encrypt"):("decrypt")),
cname,keylen,needkeylen,ivlen,needivlen,blocksize);
if ((needivlen)&&(ivlen)&&(ivlen!=needivlen))
return u8_reterr(u8_BadCryptoIV,
((caller)?(caller):(OPENSSL_CRYPTIC)),
u8_mkstring("%d!=%d(%s)",ivlen,needivlen,cname));
memset(&ctx,0,sizeof(ctx));
EVP_CIPHER_CTX_init(&ctx);
retval=EVP_CipherInit(&ctx, cipher, NULL, NULL, do_encrypt);
if (retval==0)
return u8_reterr(u8_CipherInit_Failed,
((caller)?(caller):(OPENSSL_CRYPTIC)),
u8_strdup(cname));
retval=EVP_CIPHER_CTX_set_key_length(&ctx,keylen);
if (retval==0)
return u8_reterr(u8_BadCryptoKey,
((caller)?(caller):(OPENSSL_CRYPTIC)),
u8_mkstring("%d!=%d(%s)",keylen,needkeylen,cname));
if ((needivlen)&&(ivlen!=needivlen))
return u8_reterr(u8_BadCryptoIV,
((caller)?(caller):(OPENSSL_CRYPTIC)),
u8_mkstring("%d!=%d(%s)",ivlen,needivlen,cname));
retval=EVP_CipherInit(&ctx, cipher, key, iv, do_encrypt);
if (retval==0)
return u8_reterr(u8_CipherInit_Failed,
((caller)?(caller):(OPENSSL_CRYPTIC)),
u8_strdup(cname));
while (1) {
inlen = reader(inbuf,blocksize,readstate);
if (inlen <= 0) {
u8_log(CRYPTO_LOGLEVEL,OPENSSL_CRYPTIC,
"Finished %s(%s) with %ld in, %ld out",
((do_encrypt)?("encrypt"):("decrypt")),
cname,totalin,totalout);
break;}
else totalin=totalin+inlen;
if (!(EVP_CipherUpdate(&ctx,outbuf,&outlen,inbuf,inlen))) {
char *details=u8_malloc(256);
unsigned long err=ERR_get_error();
ERR_error_string_n(err,details,256);
EVP_CIPHER_CTX_cleanup(&ctx);
return u8_reterr(u8_InternalCryptoError,
((caller)?(caller):((u8_context)"u8_cryptic")),
details);}
else {
u8_log(CRYPTO_LOGLEVEL,OPENSSL_CRYPTIC,
"%s(%s) consumed %d/%ld bytes, emitted %d/%ld bytes"
" in=<%v>\n out=<%v>",
((do_encrypt)?("encrypt"):("decrypt")),cname,
inlen,totalin,outlen,totalout+outlen,
inbuf,inlen,outbuf,outlen);
writer(outbuf,outlen,writestate);
totalout=totalout+outlen;}}
if (!(EVP_CipherFinal(&ctx,outbuf,&outlen))) {
char *details=u8_malloc(256);
unsigned long err=ERR_get_error();
ERR_error_string_n(err,details,256);
EVP_CIPHER_CTX_cleanup(&ctx);
return u8_reterr(u8_InternalCryptoError,
((caller)?(caller):(OPENSSL_CRYPTIC)),
details);}
else {
writer(outbuf,outlen,writestate);
u8_log(CRYPTO_LOGLEVEL,OPENSSL_CRYPTIC,
"%s(%s) done after consuming %ld/%ld bytes, emitting %ld/%ld bytes"
"\n final out=<%v>",
((do_encrypt)?("encrypt"):("decrypt")),cname,
inlen,totalin,outlen,totalout+outlen,
outbuf,outlen);
EVP_CIPHER_CTX_cleanup(&ctx);
totalout=totalout+outlen;
return totalout;}}
else {
char *details=u8_malloc(256);
unsigned long err=ERR_get_error();
ERR_error_string_n(err,details,256);
return u8_reterr("Unknown cipher",
((caller)?(caller):((u8_context)"u8_cryptic")),
details);}
}
}
soter_status_t soter_asym_cipher_decrypt(soter_asym_cipher_t* asym_cipher, const void* cipher_data, size_t cipher_data_length, void* plain_data, size_t* plain_data_length)
{
EVP_PKEY *pkey;
RSA *rsa;
int rsa_mod_size;
size_t output_length;
if ((!asym_cipher) || (!cipher_data) || (0 == cipher_data_length) || (!plain_data_length))
{
return SOTER_INVALID_PARAMETER;
}
pkey = EVP_PKEY_CTX_get0_pkey(asym_cipher->pkey_ctx);
if (!pkey)
{
return SOTER_INVALID_PARAMETER;
}
if (EVP_PKEY_RSA != EVP_PKEY_id(pkey))
{
/* We can only do assymetric encryption with RSA algorithm */
return SOTER_INVALID_PARAMETER;
}
rsa = EVP_PKEY_get0(pkey);
if (NULL == rsa)
{
return SOTER_FAIL;
}
rsa_mod_size = RSA_size(rsa);
if (cipher_data_length < rsa_mod_size)
{
/* The cipherdata is too small for this key size */
return SOTER_INVALID_PARAMETER;
}
/* Currently we support only OAEP padding for RSA encryption */
/* TODO: should we support "no padding" or PKCS1.5 padding? */
if (!EVP_PKEY_decrypt_init(asym_cipher->pkey_ctx))
{
return SOTER_FAIL;
}
/* TODO: This function automatically sets SHA1 as MGF digest for OAEP padding. Should we change it to SHA256? */
if (1 > EVP_PKEY_CTX_ctrl(asym_cipher->pkey_ctx, -1, -1, EVP_PKEY_CTRL_RSA_PADDING, RSA_PKCS1_OAEP_PADDING, NULL))
{
return SOTER_FAIL;
}
/* We will check the size of the output buffer first */
if (EVP_PKEY_decrypt(asym_cipher->pkey_ctx, NULL, &output_length, (const unsigned char *)cipher_data, cipher_data_length))
{
if (output_length > *plain_data_length)
{
*plain_data_length = output_length;
return SOTER_BUFFER_TOO_SMALL;
}
}
else
{
return SOTER_FAIL;
}
if (EVP_PKEY_decrypt(asym_cipher->pkey_ctx, (unsigned char *)plain_data, plain_data_length, (const unsigned char *)cipher_data, cipher_data_length))
{
if (plain_data)
{
return SOTER_SUCCESS;
}
else
{
return SOTER_BUFFER_TOO_SMALL;
}
}
else
{
return SOTER_FAIL;
}
}
