int DSAparams_print(BIO *bp, const DSA *x)
{
EVP_PKEY *pk;
int ret;
pk = EVP_PKEY_new();
if (!pk || !EVP_PKEY_set1_DSA(pk, (DSA *)x))
return 0;
ret = EVP_PKEY_print_params(bp, pk, 4, NULL);
EVP_PKEY_free(pk);
return ret;
}
int DSA_print(BIO *bp, const DSA *x, int off)
{
EVP_PKEY *pk;
int ret;
pk = EVP_PKEY_new();
if (!pk || !EVP_PKEY_set1_DSA(pk, (DSA *)x))
return 0;
ret = EVP_PKEY_print_private(bp, pk, off, NULL);
EVP_PKEY_free(pk);
return ret;
}
int PEM_write_DSAPrivateKey(FILE *fp, DSA *x, const EVP_CIPHER *enc,
unsigned char *kstr, int klen,
pem_password_cb *cb, void *u)
{
EVP_PKEY *k;
int ret;
k = EVP_PKEY_new();
if (!k)
return 0;
EVP_PKEY_set1_DSA(k, x);
ret = PEM_write_PrivateKey(fp, k, enc, kstr, klen, cb, u);
EVP_PKEY_free(k);
return ret;
}
int i2d_DSA_PUBKEY(DSA *a, unsigned char **pp)
{
EVP_PKEY *pktmp;
int ret;
if(!a) return 0;
pktmp = EVP_PKEY_new();
if(!pktmp) {
ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE);
return 0;
}
EVP_PKEY_set1_DSA(pktmp, a);
ret = i2d_PUBKEY(pktmp, pp);
EVP_PKEY_free(pktmp);
return ret;
}
int i2d_DSA_PUBKEY(const DSA *a, unsigned char **pp)
{
EVP_PKEY *pktmp;
int ret;
if(!a) return 0;
pktmp = EVP_PKEY_new();
if(!pktmp)
{
OPENSSL_PUT_ERROR(X509, i2d_DSA_PUBKEY, ERR_R_MALLOC_FAILURE);
return 0;
}
EVP_PKEY_set1_DSA(pktmp, (DSA*) a);
ret = i2d_PUBKEY(pktmp, pp);
EVP_PKEY_free(pktmp);
return ret;
}
int MAIN(int argc, char **argv)
{
ENGINE *e = NULL;
int ret=1;
DSA *dsa=NULL;
int i,badops=0;
const EVP_CIPHER *enc=NULL;
BIO *in=NULL,*out=NULL;
int informat,outformat,text=0,noout=0;
int pubin = 0, pubout = 0;
char *infile,*outfile,*prog;
#ifndef OPENSSL_NO_ENGINE
char *engine;
#endif
char *passargin = NULL, *passargout = NULL;
char *passin = NULL, *passout = NULL;
int modulus=0;
int pvk_encr = 2;
apps_startup();
if (bio_err == NULL)
if ((bio_err=BIO_new(BIO_s_file())) != NULL)
BIO_set_fp(bio_err,OPENSSL_TYPE__FILE_STDERR,BIO_NOCLOSE|BIO_FP_TEXT);
if (!load_config(bio_err, NULL))
goto end;
#ifndef OPENSSL_NO_ENGINE
engine=NULL;
#endif
infile=NULL;
outfile=NULL;
informat=FORMAT_PEM;
outformat=FORMAT_PEM;
prog=argv[0];
argc--;
argv++;
while (argc >= 1)
{
if (TINYCLR_SSL_STRCMP(*argv,"-inform") == 0)
{
if (--argc < 1) goto bad;
informat=str2fmt(*(++argv));
}
else if (TINYCLR_SSL_STRCMP(*argv,"-outform") == 0)
{
if (--argc < 1) goto bad;
outformat=str2fmt(*(++argv));
}
else if (TINYCLR_SSL_STRCMP(*argv,"-in") == 0)
{
if (--argc < 1) goto bad;
infile= *(++argv);
}
else if (TINYCLR_SSL_STRCMP(*argv,"-out") == 0)
{
if (--argc < 1) goto bad;
outfile= *(++argv);
}
else if (TINYCLR_SSL_STRCMP(*argv,"-passin") == 0)
{
if (--argc < 1) goto bad;
passargin= *(++argv);
}
else if (TINYCLR_SSL_STRCMP(*argv,"-passout") == 0)
{
if (--argc < 1) goto bad;
passargout= *(++argv);
}
#ifndef OPENSSL_NO_ENGINE
else if (TINYCLR_SSL_STRCMP(*argv,"-engine") == 0)
{
if (--argc < 1) goto bad;
engine= *(++argv);
}
#endif
else if (TINYCLR_SSL_STRCMP(*argv,"-pvk-strong") == 0)
pvk_encr=2;
else if (TINYCLR_SSL_STRCMP(*argv,"-pvk-weak") == 0)
pvk_encr=1;
else if (TINYCLR_SSL_STRCMP(*argv,"-pvk-none") == 0)
pvk_encr=0;
else if (TINYCLR_SSL_STRCMP(*argv,"-noout") == 0)
noout=1;
else if (TINYCLR_SSL_STRCMP(*argv,"-text") == 0)
text=1;
else if (TINYCLR_SSL_STRCMP(*argv,"-modulus") == 0)
modulus=1;
else if (TINYCLR_SSL_STRCMP(*argv,"-pubin") == 0)
pubin=1;
else if (TINYCLR_SSL_STRCMP(*argv,"-pubout") == 0)
pubout=1;
else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
{
BIO_printf(bio_err,"unknown option %s\n",*argv);
badops=1;
break;
}
argc--;
argv++;
}
if (badops)
{
bad:
BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
BIO_printf(bio_err,"where options are\n");
BIO_printf(bio_err," -inform arg input format - DER or PEM\n");
BIO_printf(bio_err," -outform arg output format - DER or PEM\n");
BIO_printf(bio_err," -in arg input file\n");
BIO_printf(bio_err," -passin arg input file pass phrase source\n");
BIO_printf(bio_err," -out arg output file\n");
BIO_printf(bio_err," -passout arg output file pass phrase source\n");
#ifndef OPENSSL_NO_ENGINE
BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n");
#endif
BIO_printf(bio_err," -des encrypt PEM output with cbc des\n");
BIO_printf(bio_err," -des3 encrypt PEM output with ede cbc des using 168 bit key\n");
#ifndef OPENSSL_NO_IDEA
BIO_printf(bio_err," -idea encrypt PEM output with cbc idea\n");
#endif
#ifndef OPENSSL_NO_AES
BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
BIO_printf(bio_err," encrypt PEM output with cbc aes\n");
#endif
#ifndef OPENSSL_NO_CAMELLIA
BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
BIO_printf(bio_err," encrypt PEM output with cbc camellia\n");
#endif
#ifndef OPENSSL_NO_SEED
BIO_printf(bio_err," -seed encrypt PEM output with cbc seed\n");
#endif
BIO_printf(bio_err," -text print the key in text\n");
BIO_printf(bio_err," -noout don't print key out\n");
BIO_printf(bio_err," -modulus print the DSA public value\n");
goto end;
}
ERR_load_crypto_strings();
#ifndef OPENSSL_NO_ENGINE
e = setup_engine(bio_err, engine, 0);
#endif
if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
BIO_printf(bio_err, "Error getting passwords\n");
goto end;
}
in=BIO_new(BIO_s_file());
out=BIO_new(BIO_s_file());
if ((in == NULL) || (out == NULL))
{
ERR_print_errors(bio_err);
goto end;
}
if (infile == NULL)
BIO_set_fp(in,OPENSSL_TYPE__FILE_STDIN,BIO_NOCLOSE);
else
{
if (BIO_read_filename(in,infile) <= 0)
{
TINYCLR_SSL_PERROR(infile);
goto end;
}
}
BIO_printf(bio_err,"read DSA key\n");
{
EVP_PKEY *pkey;
if (pubin)
pkey = load_pubkey(bio_err, infile, informat, 1,
passin, e, "Public Key");
else
pkey = load_key(bio_err, infile, informat, 1,
passin, e, "Private Key");
if (pkey)
{
dsa = EVP_PKEY_get1_DSA(pkey);
EVP_PKEY_free(pkey);
}
}
if (dsa == NULL)
{
BIO_printf(bio_err,"unable to load Key\n");
ERR_print_errors(bio_err);
goto end;
}
if (outfile == NULL)
{
BIO_set_fp(out,OPENSSL_TYPE__FILE_STDOUT,BIO_NOCLOSE);
#ifdef OPENSSL_SYS_VMS
{
BIO *tmpbio = BIO_new(BIO_f_linebuffer());
out = BIO_push(tmpbio, out);
}
#endif
}
else
{
if (BIO_write_filename(out,outfile) <= 0)
{
TINYCLR_SSL_PERROR(outfile);
goto end;
}
}
if (text)
if (!DSA_print(out,dsa,0))
{
TINYCLR_SSL_PERROR(outfile);
ERR_print_errors(bio_err);
goto end;
}
if (modulus)
{
TINYCLR_SSL_FPRINTF(OPENSSL_TYPE__FILE_STDOUT,"Public Key=");
BN_print(out,dsa->pub_key);
TINYCLR_SSL_FPRINTF(OPENSSL_TYPE__FILE_STDOUT,"\n");
}
if (noout) goto end;
BIO_printf(bio_err,"writing DSA key\n");
if (outformat == FORMAT_ASN1) {
if(pubin || pubout) i=i2d_DSA_PUBKEY_bio(out,dsa);
else i=i2d_DSAPrivateKey_bio(out,dsa);
} else if (outformat == FORMAT_PEM) {
if(pubin || pubout)
i=PEM_write_bio_DSA_PUBKEY(out,dsa);
else i=PEM_write_bio_DSAPrivateKey(out,dsa,enc,
NULL,0,NULL, passout);
#if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_RC4)
} else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
EVP_PKEY *pk;
pk = EVP_PKEY_new();
EVP_PKEY_set1_DSA(pk, dsa);
if (outformat == FORMAT_PVK)
i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
else if (pubin || pubout)
i = i2b_PublicKey_bio(out, pk);
else
i = i2b_PrivateKey_bio(out, pk);
EVP_PKEY_free(pk);
#endif
} else {
BIO_printf(bio_err,"bad output format specified for outfile\n");
goto end;
}
if (i <= 0)
{
BIO_printf(bio_err,"unable to write private key\n");
ERR_print_errors(bio_err);
}
else
ret=0;
end:
if(in != NULL) BIO_free(in);
if(out != NULL) BIO_free_all(out);
if(dsa != NULL) DSA_free(dsa);
if(passin) OPENSSL_free(passin);
if(passout) OPENSSL_free(passout);
apps_shutdown();
OPENSSL_EXIT(ret);
}
static EVP_PKEY *b2i_dss(const unsigned char **in,
unsigned int bitlen, int ispub)
{
const unsigned char *p = *in;
EVP_PKEY *ret = NULL;
DSA *dsa = NULL;
BN_CTX *ctx = NULL;
unsigned int nbyte;
BIGNUM *pbn = NULL, *qbn = NULL, *gbn = NULL, *priv_key = NULL;
BIGNUM *pub_key = NULL;
nbyte = (bitlen + 7) >> 3;
dsa = DSA_new();
ret = EVP_PKEY_new();
if (dsa == NULL || ret == NULL)
goto memerr;
if (!read_lebn(&p, nbyte, &pbn))
goto memerr;
if (!read_lebn(&p, 20, &qbn))
goto memerr;
if (!read_lebn(&p, nbyte, &gbn))
goto memerr;
if (ispub) {
if (!read_lebn(&p, nbyte, &pub_key))
goto memerr;
} else {
if (!read_lebn(&p, 20, &priv_key))
goto memerr;
/* Calculate public key */
pub_key = BN_new();
if (pub_key == NULL)
goto memerr;
if ((ctx = BN_CTX_new()) == NULL)
goto memerr;
if (!BN_mod_exp(pub_key, gbn, priv_key, pbn, ctx))
goto memerr;
BN_CTX_free(ctx);
}
if (!DSA_set0_pqg(dsa, pbn, qbn, gbn))
goto memerr;
pbn = qbn = gbn = NULL;
if (!DSA_set0_key(dsa, pub_key, priv_key))
goto memerr;
EVP_PKEY_set1_DSA(ret, dsa);
DSA_free(dsa);
*in = p;
return ret;
memerr:
PEMerr(PEM_F_B2I_DSS, ERR_R_MALLOC_FAILURE);
DSA_free(dsa);
BN_free(pbn);
BN_free(qbn);
BN_free(gbn);
BN_free(pub_key);
BN_free(priv_key);
EVP_PKEY_free(ret);
BN_CTX_free(ctx);
return NULL;
}
static isc_result_t
openssldsa_verify(dst_context_t *dctx, const isc_region_t *sig) {
dst_key_t *key = dctx->key;
DSA *dsa = key->keydata.dsa;
int status = 0;
unsigned char *cp = sig->base;
DSA_SIG *dsasig;
#if USE_EVP
EVP_MD_CTX *evp_md_ctx = dctx->ctxdata.evp_md_ctx;
#if 0
EVP_PKEY *pkey;
unsigned char *sigbuf;
#endif
unsigned int siglen;
#else
isc_sha1_t *sha1ctx = dctx->ctxdata.sha1ctx;
#endif
unsigned char digest[ISC_SHA1_DIGESTLENGTH];
#if USE_EVP
#if 1
/* Only use EVP for the digest */
if (!EVP_DigestFinal_ex(evp_md_ctx, digest, &siglen)) {
return (ISC_R_FAILURE);
}
#endif
#else
isc_sha1_final(sha1ctx, digest);
#endif
if (sig->length != 2 * ISC_SHA1_DIGESTLENGTH + 1) {
return (DST_R_VERIFYFAILURE);
}
cp++; /*%< Skip T */
dsasig = DSA_SIG_new();
if (dsasig == NULL)
return (ISC_R_NOMEMORY);
dsasig->r = BN_bin2bn(cp, ISC_SHA1_DIGESTLENGTH, NULL);
cp += ISC_SHA1_DIGESTLENGTH;
dsasig->s = BN_bin2bn(cp, ISC_SHA1_DIGESTLENGTH, NULL);
#if 0
pkey = EVP_PKEY_new();
if (pkey == NULL)
return (ISC_R_NOMEMORY);
if (!EVP_PKEY_set1_DSA(pkey, dsa)) {
EVP_PKEY_free(pkey);
return (ISC_R_FAILURE);
}
/* Convert to Dss-Sig-Value (RFC2459). */
sigbuf = malloc(EVP_PKEY_size(pkey) + 50);
if (sigbuf == NULL) {
EVP_PKEY_free(pkey);
return (ISC_R_NOMEMORY);
}
siglen = (unsigned) i2d_DSA_SIG(dsasig, &sigbuf);
INSIST(EVP_PKEY_size(pkey) >= (int) siglen);
status = EVP_VerifyFinal(evp_md_ctx, sigbuf, siglen, pkey);
EVP_PKEY_free(pkey);
free(sigbuf);
#else
status = DSA_do_verify(digest, ISC_SHA1_DIGESTLENGTH, dsasig, dsa);
#endif
DSA_SIG_free(dsasig);
if (status != 1)
return (dst__openssl_toresult(DST_R_VERIFYFAILURE));
return (ISC_R_SUCCESS);
}
static isc_result_t
openssldsa_sign(dst_context_t *dctx, isc_buffer_t *sig) {
dst_key_t *key = dctx->key;
DSA *dsa = key->keydata.dsa;
isc_region_t r;
DSA_SIG *dsasig;
#if USE_EVP
EVP_MD_CTX *evp_md_ctx = dctx->ctxdata.evp_md_ctx;
EVP_PKEY *pkey;
unsigned char *sigbuf;
const unsigned char *sb;
unsigned int siglen;
#else
isc_sha1_t *sha1ctx = dctx->ctxdata.sha1ctx;
unsigned char digest[ISC_SHA1_DIGESTLENGTH];
#endif
isc_buffer_availableregion(sig, &r);
if (r.length < ISC_SHA1_DIGESTLENGTH * 2 + 1)
return (ISC_R_NOSPACE);
#if USE_EVP
pkey = EVP_PKEY_new();
if (pkey == NULL)
return (ISC_R_NOMEMORY);
if (!EVP_PKEY_set1_DSA(pkey, dsa)) {
EVP_PKEY_free(pkey);
return (ISC_R_FAILURE);
}
sigbuf = malloc(EVP_PKEY_size(pkey));
if (sigbuf == NULL) {
EVP_PKEY_free(pkey);
return (ISC_R_NOMEMORY);
}
if (!EVP_SignFinal(evp_md_ctx, sigbuf, &siglen, pkey)) {
EVP_PKEY_free(pkey);
free(sigbuf);
return (ISC_R_FAILURE);
}
INSIST(EVP_PKEY_size(pkey) >= (int) siglen);
EVP_PKEY_free(pkey);
/* Convert from Dss-Sig-Value (RFC2459). */
dsasig = DSA_SIG_new();
if (dsasig == NULL) {
free(sigbuf);
return (ISC_R_NOMEMORY);
}
sb = sigbuf;
if (d2i_DSA_SIG(&dsasig, &sb, (long) siglen) == NULL) {
free(sigbuf);
return (ISC_R_FAILURE);
}
free(sigbuf);
#elif 0
/* Only use EVP for the Digest */
if (!EVP_DigestFinal_ex(evp_md_ctx, digest, &siglen)) {
return (ISC_R_FAILURE);
}
dsasig = DSA_do_sign(digest, ISC_SHA1_DIGESTLENGTH, dsa);
if (dsasig == NULL)
return (dst__openssl_toresult(DST_R_SIGNFAILURE));
#else
isc_sha1_final(sha1ctx, digest);
dsasig = DSA_do_sign(digest, ISC_SHA1_DIGESTLENGTH, dsa);
if (dsasig == NULL)
return (dst__openssl_toresult(DST_R_SIGNFAILURE));
#endif
*r.base++ = (key->key_size - 512)/64;
BN_bn2bin_fixed(dsasig->r, r.base, ISC_SHA1_DIGESTLENGTH);
r.base += ISC_SHA1_DIGESTLENGTH;
BN_bn2bin_fixed(dsasig->s, r.base, ISC_SHA1_DIGESTLENGTH);
r.base += ISC_SHA1_DIGESTLENGTH;
DSA_SIG_free(dsasig);
isc_buffer_add(sig, ISC_SHA1_DIGESTLENGTH * 2 + 1);
return (ISC_R_SUCCESS);
}
int
dsa_main(int argc, char **argv)
{
int ret = 1;
DSA *dsa = NULL;
int i;
BIO *in = NULL, *out = NULL;
char *passin = NULL, *passout = NULL;
memset(&dsa_config, 0, sizeof(dsa_config));
dsa_config.pvk_encr = 2;
dsa_config.informat = FORMAT_PEM;
dsa_config.outformat = FORMAT_PEM;
if (options_parse(argc, argv, dsa_options, NULL, NULL) != 0) {
dsa_usage();
goto end;
}
if (!app_passwd(bio_err, dsa_config.passargin, dsa_config.passargout,
&passin, &passout)) {
BIO_printf(bio_err, "Error getting passwords\n");
goto end;
}
in = BIO_new(BIO_s_file());
out = BIO_new(BIO_s_file());
if (in == NULL || out == NULL) {
ERR_print_errors(bio_err);
goto end;
}
if (dsa_config.infile == NULL)
BIO_set_fp(in, stdin, BIO_NOCLOSE);
else {
if (BIO_read_filename(in, dsa_config.infile) <= 0) {
perror(dsa_config.infile);
goto end;
}
}
BIO_printf(bio_err, "read DSA key\n");
{
EVP_PKEY *pkey;
if (dsa_config.pubin)
pkey = load_pubkey(bio_err, dsa_config.infile,
dsa_config.informat, 1, passin, "Public Key");
else
pkey = load_key(bio_err, dsa_config.infile,
dsa_config.informat, 1, passin, "Private Key");
if (pkey) {
dsa = EVP_PKEY_get1_DSA(pkey);
EVP_PKEY_free(pkey);
}
}
if (dsa == NULL) {
BIO_printf(bio_err, "unable to load Key\n");
ERR_print_errors(bio_err);
goto end;
}
if (dsa_config.outfile == NULL) {
BIO_set_fp(out, stdout, BIO_NOCLOSE);
} else {
if (BIO_write_filename(out, dsa_config.outfile) <= 0) {
perror(dsa_config.outfile);
goto end;
}
}
if (dsa_config.text) {
if (!DSA_print(out, dsa, 0)) {
perror(dsa_config.outfile);
ERR_print_errors(bio_err);
goto end;
}
}
if (dsa_config.modulus) {
fprintf(stdout, "Public Key=");
BN_print(out, dsa->pub_key);
fprintf(stdout, "\n");
}
if (dsa_config.noout)
goto end;
BIO_printf(bio_err, "writing DSA key\n");
if (dsa_config.outformat == FORMAT_ASN1) {
if (dsa_config.pubin || dsa_config.pubout)
i = i2d_DSA_PUBKEY_bio(out, dsa);
else
i = i2d_DSAPrivateKey_bio(out, dsa);
} else if (dsa_config.outformat == FORMAT_PEM) {
if (dsa_config.pubin || dsa_config.pubout)
i = PEM_write_bio_DSA_PUBKEY(out, dsa);
else
i = PEM_write_bio_DSAPrivateKey(out, dsa, dsa_config.enc,
NULL, 0, NULL, passout);
#if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_RC4)
} else if (dsa_config.outformat == FORMAT_MSBLOB ||
dsa_config.outformat == FORMAT_PVK) {
EVP_PKEY *pk;
pk = EVP_PKEY_new();
EVP_PKEY_set1_DSA(pk, dsa);
if (dsa_config.outformat == FORMAT_PVK)
i = i2b_PVK_bio(out, pk, dsa_config.pvk_encr, 0,
passout);
else if (dsa_config.pubin || dsa_config.pubout)
i = i2b_PublicKey_bio(out, pk);
else
i = i2b_PrivateKey_bio(out, pk);
EVP_PKEY_free(pk);
#endif
} else {
BIO_printf(bio_err, "bad output format specified for outfile\n");
goto end;
}
if (i <= 0) {
BIO_printf(bio_err, "unable to write private key\n");
ERR_print_errors(bio_err);
} else
ret = 0;
end:
BIO_free(in);
if (out != NULL)
BIO_free_all(out);
if (dsa != NULL)
DSA_free(dsa);
free(passin);
free(passout);
return (ret);
}
static int sign_and_verify(int len)
{
/*
* Per FIPS 186-4, the hash is recommended to be the same length as q.
* If the hash is longer than q, the leftmost N bits are used; if the hash
* is shorter, then we left-pad (see appendix C.2.1).
*/
size_t sigLength;
int digestlen = BN_num_bytes(DSA_get0_q(dsakey));
int ok = 0;
unsigned char *dataToSign = OPENSSL_malloc(len);
unsigned char *paddedData = OPENSSL_malloc(digestlen);
unsigned char *signature = NULL;
EVP_PKEY_CTX *ctx = NULL;
EVP_PKEY *pkey = NULL;
if (!TEST_ptr(dataToSign) ||
!TEST_ptr(paddedData) ||
!TEST_int_eq(RAND_bytes(dataToSign, len), 1))
goto end;
memset(paddedData, 0, digestlen);
if (len > digestlen)
memcpy(paddedData, dataToSign, digestlen);
else
memcpy(paddedData + digestlen - len, dataToSign, len);
if (!TEST_ptr(pkey = EVP_PKEY_new()))
goto end;
EVP_PKEY_set1_DSA(pkey, dsakey);
if (!TEST_ptr(ctx = EVP_PKEY_CTX_new(pkey, NULL)))
goto end;
if (!TEST_int_eq(EVP_PKEY_sign_init(ctx), 1))
goto end;
if (EVP_PKEY_sign(ctx, NULL, &sigLength, dataToSign, len) != 1) {
TEST_error("Failed to get signature length, len=%d", len);
goto end;
}
if (!TEST_ptr(signature = OPENSSL_malloc(sigLength)))
goto end;
if (EVP_PKEY_sign(ctx, signature, &sigLength, dataToSign, len) != 1) {
TEST_error("Failed to sign, len=%d", len);
goto end;
}
/* Check that the signature is okay via the EVP interface */
if (!TEST_int_eq(EVP_PKEY_verify_init(ctx), 1))
goto end;
/* ... using the same data we just signed */
if (EVP_PKEY_verify(ctx, signature, sigLength, dataToSign, len) != 1) {
TEST_error("EVP verify with unpadded length %d failed\n", len);
goto end;
}
/* ... padding/truncating the data to the appropriate digest size */
if (EVP_PKEY_verify(ctx, signature, sigLength, paddedData, digestlen) != 1) {
TEST_error("EVP verify with length %d failed\n", len);
goto end;
}
/* Verify again using the raw DSA interface */
if (DSA_verify(0, dataToSign, len, signature, sigLength, dsakey) != 1) {
TEST_error("Verification with unpadded data failed, len=%d", len);
goto end;
}
if (DSA_verify(0, paddedData, digestlen, signature, sigLength, dsakey) != 1) {
TEST_error("verify with length %d failed\n", len);
goto end;
}
ok = 1;
end:
EVP_PKEY_CTX_free(ctx);
EVP_PKEY_free(pkey);
OPENSSL_free(signature);
OPENSSL_free(paddedData);
OPENSSL_free(dataToSign);
return ok;
}
extern "C" int32_t CryptoNative_EvpPkeySetDsa(EVP_PKEY* pkey, DSA* dsa)
{
return EVP_PKEY_set1_DSA(pkey, dsa);
}
// Save the DSA key as a PKCS#8 file
int save_dsa_pkcs8(char* out_path, char* file_pin, key_material_t* pkey)
{
DSA* dsa = NULL;
EVP_PKEY* ossl_pkey = NULL;
PKCS8_PRIV_KEY_INFO* p8inf = NULL;
BIO* out = NULL;
X509_SIG* p8 = NULL;
int result = 0;
// See if the key material was found.
if
(
pkey[TAG_PRIME].size <= 0 ||
pkey[TAG_SUBPRIME].size <= 0 ||
pkey[TAG_BASE].size <= 0 ||
pkey[TAG_PRIVVAL].size <= 0 ||
pkey[TAG_PUBVAL].size <= 0
)
{
fprintf(stderr, "ERROR: Some parts of the key material is missing in the input file.\n");
return 1;
}
dsa = DSA_new();
dsa->p = BN_bin2bn((unsigned char*)pkey[TAG_PRIME].big, pkey[TAG_PRIME].size, NULL);
dsa->q = BN_bin2bn((unsigned char*)pkey[TAG_SUBPRIME].big, pkey[TAG_SUBPRIME].size, NULL);
dsa->g = BN_bin2bn((unsigned char*)pkey[TAG_BASE].big, pkey[TAG_BASE].size, NULL);
dsa->priv_key = BN_bin2bn((unsigned char*)pkey[TAG_PRIVVAL].big, pkey[TAG_PRIVVAL].size, NULL);
dsa->pub_key = BN_bin2bn((unsigned char*)pkey[TAG_PUBVAL].big, pkey[TAG_PUBVAL].size, NULL);
ossl_pkey = EVP_PKEY_new();
// Convert DSA to EVP_PKEY
if (!EVP_PKEY_set1_DSA(ossl_pkey, dsa))
{
fprintf(stderr, "ERROR: Could not convert DSA key to EVP_PKEY.\n");
DSA_free(dsa);
EVP_PKEY_free(ossl_pkey);
return 1;
}
DSA_free(dsa);
// Convert EVP_PKEY to PKCS#8
if (!(p8inf = EVP_PKEY2PKCS8(ossl_pkey)))
{
fprintf(stderr, "ERROR: Could not convert EVP_PKEY to PKCS#8.\n");
EVP_PKEY_free(ossl_pkey);
return 1;
}
EVP_PKEY_free(ossl_pkey);
// Open output file
if (!(out = BIO_new_file (out_path, "wb")))
{
fprintf(stderr, "ERROR: Could not open the output file.\n");
PKCS8_PRIV_KEY_INFO_free(p8inf);
return 1;
}
// Write to disk
if (file_pin == NULL)
{
PEM_write_bio_PKCS8_PRIV_KEY_INFO(out, p8inf);
printf("The key has been written to %s\n", out_path);
}
else
{
// Encrypt p8
if (!(p8 = PKCS8_encrypt(NID_pbeWithMD5AndDES_CBC, NULL,
file_pin, strlen(file_pin), NULL,
0, PKCS12_DEFAULT_ITER, p8inf)))
{
fprintf(stderr, "ERROR: Could not encrypt the PKCS#8 file\n");
result = 1;
}
else
{
PEM_write_bio_PKCS8(out, p8);
X509_SIG_free(p8);
printf("The key has been written to %s\n", out_path);
}
}
PKCS8_PRIV_KEY_INFO_free(p8inf);
BIO_free_all(out);
return result;
}
int dsa_main(int argc, char **argv)
{
BIO *out = NULL;
DSA *dsa = NULL;
ENGINE *e = NULL;
const EVP_CIPHER *enc = NULL;
char *infile = NULL, *outfile = NULL, *prog;
char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL;
OPTION_CHOICE o;
int informat = FORMAT_PEM, outformat = FORMAT_PEM, text = 0, noout = 0;
int i, modulus = 0, pubin = 0, pubout = 0, pvk_encr = 2, ret = 1;
prog = opt_init(argc, argv, dsa_options);
while ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_EOF:
case OPT_ERR:
#ifdef OPENSSL_NO_RC4
case OPT_PVK_STRONG:
case OPT_PVK_WEAK:
case OPT_PVK_NONE:
#endif
opthelp:
ret = 0;
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
goto end;
case OPT_HELP:
opt_help(dsa_options);
ret = 0;
goto end;
case OPT_INFORM:
if (!opt_format
(opt_arg(), OPT_FMT_PEMDER | OPT_FMT_PVK, &informat))
goto opthelp;
break;
case OPT_IN:
infile = opt_arg();
break;
case OPT_OUTFORM:
if (!opt_format
(opt_arg(), OPT_FMT_PEMDER | OPT_FMT_PVK, &outformat))
goto opthelp;
break;
case OPT_OUT:
outfile = opt_arg();
break;
case OPT_ENGINE:
e = setup_engine(opt_arg(), 0);
break;
case OPT_PASSIN:
passinarg = opt_arg();
break;
case OPT_PASSOUT:
passoutarg = opt_arg();
break;
#ifndef OPENSSL_NO_RC4
case OPT_PVK_STRONG:
pvk_encr = 2;
break;
case OPT_PVK_WEAK:
pvk_encr = 1;
break;
case OPT_PVK_NONE:
pvk_encr = 0;
break;
#endif
case OPT_NOOUT:
noout = 1;
break;
case OPT_TEXT:
text = 1;
break;
case OPT_MODULUS:
modulus = 1;
break;
case OPT_PUBIN:
pubin = 1;
break;
case OPT_PUBOUT:
pubout = 1;
break;
case OPT_CIPHER:
if (!opt_cipher(opt_unknown(), &enc))
goto end;
break;
}
}
argc = opt_num_rest();
argv = opt_rest();
if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
BIO_printf(bio_err, "Error getting passwords\n");
goto end;
}
BIO_printf(bio_err, "read DSA key\n");
{
EVP_PKEY *pkey;
if (pubin)
pkey = load_pubkey(infile, informat, 1, passin, e, "Public Key");
else
pkey = load_key(infile, informat, 1, passin, e, "Private Key");
if (pkey) {
dsa = EVP_PKEY_get1_DSA(pkey);
EVP_PKEY_free(pkey);
}
}
if (dsa == NULL) {
BIO_printf(bio_err, "unable to load Key\n");
ERR_print_errors(bio_err);
goto end;
}
out = bio_open_default(outfile, "w");
if (out == NULL)
goto end;
if (text)
if (!DSA_print(out, dsa, 0)) {
perror(outfile);
ERR_print_errors(bio_err);
goto end;
}
if (modulus) {
BIO_printf(out, "Public Key=");
BN_print(out, dsa->pub_key);
BIO_printf(out, "\n");
}
if (noout) {
ret = 0;
goto end;
}
BIO_printf(bio_err, "writing DSA key\n");
if (outformat == FORMAT_ASN1) {
if (pubin || pubout)
i = i2d_DSA_PUBKEY_bio(out, dsa);
else
i = i2d_DSAPrivateKey_bio(out, dsa);
} else if (outformat == FORMAT_PEM) {
if (pubin || pubout)
i = PEM_write_bio_DSA_PUBKEY(out, dsa);
else
i = PEM_write_bio_DSAPrivateKey(out, dsa, enc,
NULL, 0, NULL, passout);
# if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_RC4)
} else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
EVP_PKEY *pk;
pk = EVP_PKEY_new();
EVP_PKEY_set1_DSA(pk, dsa);
if (outformat == FORMAT_PVK)
i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
else if (pubin || pubout)
i = i2b_PublicKey_bio(out, pk);
else
i = i2b_PrivateKey_bio(out, pk);
EVP_PKEY_free(pk);
# endif
} else {
BIO_printf(bio_err, "bad output format specified for outfile\n");
goto end;
}
if (i <= 0) {
BIO_printf(bio_err, "unable to write private key\n");
ERR_print_errors(bio_err);
goto end;
}
ret = 0;
end:
BIO_free_all(out);
DSA_free(dsa);
if (passin)
OPENSSL_free(passin);
if (passout)
OPENSSL_free(passout);
return (ret);
}
static EVP_PKEY *b2i_dss(const unsigned char **in, unsigned int length,
unsigned int bitlen, int ispub)
{
const unsigned char *p = *in;
EVP_PKEY *ret = NULL;
DSA *dsa = NULL;
BN_CTX *ctx = NULL;
unsigned int nbyte;
nbyte = (bitlen + 7) >> 3;
dsa = DSA_new();
ret = EVP_PKEY_new();
if (!dsa || !ret)
goto memerr;
if (!read_lebn(&p, nbyte, &dsa->p))
goto memerr;
if (!read_lebn(&p, 20, &dsa->q))
goto memerr;
if (!read_lebn(&p, nbyte, &dsa->g))
goto memerr;
if (ispub)
{
if (!read_lebn(&p, nbyte, &dsa->pub_key))
goto memerr;
}
else
{
if (!read_lebn(&p, 20, &dsa->priv_key))
goto memerr;
/* Calculate public key */
if (!(dsa->pub_key = BN_new()))
goto memerr;
if (!(ctx = BN_CTX_new()))
goto memerr;
if (!BN_mod_exp(dsa->pub_key, dsa->g,
dsa->priv_key, dsa->p, ctx))
goto memerr;
BN_CTX_free(ctx);
}
EVP_PKEY_set1_DSA(ret, dsa);
DSA_free(dsa);
*in = p;
return ret;
memerr:
PEMerr(PEM_F_B2I_DSS, ERR_R_MALLOC_FAILURE);
if (dsa)
DSA_free(dsa);
if (ret)
EVP_PKEY_free(ret);
if (ctx)
BN_CTX_free(ctx);
return NULL;
}
