CMS_RecipientInfo *CMS_add1_recipient_cert(CMS_ContentInfo *cms, X509 *recip, unsigned int flags) { CMS_RecipientInfo *ri = NULL; CMS_EnvelopedData *env; EVP_PKEY *pk = NULL; env = cms_get0_enveloped(cms); if (!env) goto err; /* Initialize recipient info */ ri = M_ASN1_new_of(CMS_RecipientInfo); if (!ri) goto merr; pk = X509_get_pubkey(recip); if (!pk) { CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, CMS_R_ERROR_GETTING_PUBLIC_KEY); goto err; } switch (cms_pkey_get_ri_type(pk)) { case CMS_RECIPINFO_TRANS: if (!cms_RecipientInfo_ktri_init(ri, recip, pk, flags)) goto err; break; case CMS_RECIPINFO_AGREE: if (!cms_RecipientInfo_kari_init(ri, recip, pk, flags)) goto err; break; default: CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); goto err; } if (!sk_CMS_RecipientInfo_push(env->recipientInfos, ri)) goto merr; EVP_PKEY_free(pk); return ri; merr: CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, ERR_R_MALLOC_FAILURE); err: if (ri) M_ASN1_free_of(ri, CMS_RecipientInfo); if (pk) EVP_PKEY_free(pk); return NULL; }
CMS_RecipientInfo *CMS_add0_recipient_key(CMS_ContentInfo *cms, int nid, unsigned char *key, size_t keylen, unsigned char *id, size_t idlen, ASN1_GENERALIZEDTIME *date, ASN1_OBJECT *otherTypeId, ASN1_TYPE *otherType) { CMS_RecipientInfo *ri = NULL; CMS_EnvelopedData *env; CMS_KEKRecipientInfo *kekri; env = cms_get0_enveloped(cms); if (!env) goto err; if (nid == NID_undef) { switch (keylen) { case 16: nid = NID_id_aes128_wrap; break; case 24: nid = NID_id_aes192_wrap; break; case 32: nid = NID_id_aes256_wrap; break; default: CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY, CMS_R_INVALID_KEY_LENGTH); goto err; } } else { size_t exp_keylen = aes_wrap_keylen(nid); if (!exp_keylen) { CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY, CMS_R_UNSUPPORTED_KEK_ALGORITHM); goto err; } if (keylen != exp_keylen) { CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY, CMS_R_INVALID_KEY_LENGTH); goto err; } } /* Initialize recipient info */ ri = M_ASN1_new_of(CMS_RecipientInfo); if (!ri) goto merr; ri->d.kekri = M_ASN1_new_of(CMS_KEKRecipientInfo); if (!ri->d.kekri) goto merr; ri->type = CMS_RECIPINFO_KEK; kekri = ri->d.kekri; if (otherTypeId) { kekri->kekid->other = M_ASN1_new_of(CMS_OtherKeyAttribute); if (kekri->kekid->other == NULL) goto merr; } if (!sk_CMS_RecipientInfo_push(env->recipientInfos, ri)) goto merr; /* After this point no calls can fail */ kekri->version = 4; kekri->key = key; kekri->keylen = keylen; ASN1_STRING_set0(kekri->kekid->keyIdentifier, id, idlen); kekri->kekid->date = date; if (kekri->kekid->other) { kekri->kekid->other->keyAttrId = otherTypeId; kekri->kekid->other->keyAttr = otherType; } X509_ALGOR_set0(kekri->keyEncryptionAlgorithm, OBJ_nid2obj(nid), V_ASN1_UNDEF, NULL); return ri; merr: CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY, ERR_R_MALLOC_FAILURE); err: if (ri) M_ASN1_free_of(ri, CMS_RecipientInfo); return NULL; }
CMS_RecipientInfo *CMS_add1_recipient_cert(CMS_ContentInfo *cms, X509 *recip, unsigned int flags) { CMS_RecipientInfo *ri = NULL; CMS_KeyTransRecipientInfo *ktri; CMS_EnvelopedData *env; EVP_PKEY *pk = NULL; int i, type; env = cms_get0_enveloped(cms); if (!env) goto err; /* Initialize recipient info */ ri = M_ASN1_new_of(CMS_RecipientInfo); if (!ri) goto merr; /* Initialize and add key transport recipient info */ ri->d.ktri = M_ASN1_new_of(CMS_KeyTransRecipientInfo); if (!ri->d.ktri) goto merr; ri->type = CMS_RECIPINFO_TRANS; ktri = ri->d.ktri; X509_check_purpose(recip, -1, -1); pk = X509_get_pubkey(recip); if (!pk) { CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, CMS_R_ERROR_GETTING_PUBLIC_KEY); goto err; } CRYPTO_add(&recip->references, 1, CRYPTO_LOCK_X509); ktri->pkey = pk; ktri->recip = recip; if (flags & CMS_USE_KEYID) { ktri->version = 2; if (env->version < 2) env->version = 2; type = CMS_RECIPINFO_KEYIDENTIFIER; } else { ktri->version = 0; type = CMS_RECIPINFO_ISSUER_SERIAL; } /* * Not a typo: RecipientIdentifier and SignerIdentifier are the same * structure. */ if (!cms_set1_SignerIdentifier(ktri->rid, recip, type)) goto err; if (pk->ameth && pk->ameth->pkey_ctrl) { i = pk->ameth->pkey_ctrl(pk, ASN1_PKEY_CTRL_CMS_ENVELOPE, 0, ri); if (i == -2) { CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); goto err; } if (i <= 0) { CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, CMS_R_CTRL_FAILURE); goto err; } } if (!sk_CMS_RecipientInfo_push(env->recipientInfos, ri)) goto merr; return ri; merr: CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, ERR_R_MALLOC_FAILURE); err: if (ri) M_ASN1_free_of(ri, CMS_RecipientInfo); return NULL; }
CMS_RecipientInfo *CMS_add1_recipient_cert(CMS_ContentInfo *cms, X509 *recip, unsigned int flags) { CMS_RecipientInfo *ri = NULL; CMS_KeyTransRecipientInfo *ktri; CMS_EnvelopedData *env; EVP_PKEY *pk = NULL; int type; env = cms_get0_enveloped(cms); if (!env) goto err; /* Initialize recipient info */ ri = M_ASN1_new_of(CMS_RecipientInfo); if (!ri) goto merr; /* Initialize and add key transport recipient info */ ri->d.ktri = M_ASN1_new_of(CMS_KeyTransRecipientInfo); if (!ri->d.ktri) goto merr; ri->type = CMS_RECIPINFO_TRANS; ktri = ri->d.ktri; X509_check_purpose(recip, -1, -1); pk = X509_get_pubkey(recip); if (!pk) { CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, CMS_R_ERROR_GETTING_PUBLIC_KEY); goto err; } CRYPTO_add(&recip->references, 1, CRYPTO_LOCK_X509); ktri->pkey = pk; ktri->recip = recip; if (flags & CMS_USE_KEYID) { ktri->version = 2; type = CMS_RECIPINFO_KEYIDENTIFIER; } else { ktri->version = 0; type = CMS_RECIPINFO_ISSUER_SERIAL; } /* Not a typo: RecipientIdentifier and SignerIdentifier are the * same structure. */ if (!cms_set1_SignerIdentifier(ktri->rid, recip, type)) goto err; /* Since we have no EVP_PKEY_ASN1_METHOD in OpenSSL 0.9.8, * hard code algorithm parameters. */ if (pk->type == EVP_PKEY_RSA) { X509_ALGOR_set0(ktri->keyEncryptionAlgorithm, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0); } else { CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); goto err; } if (!sk_CMS_RecipientInfo_push(env->recipientInfos, ri)) goto merr; return ri; merr: CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, ERR_R_MALLOC_FAILURE); err: if (ri) M_ASN1_free_of(ri, CMS_RecipientInfo); return NULL; }
CMS_RecipientInfo * CMS_add0_recipient_password(CMS_ContentInfo *cms, int iter, int wrap_nid, int pbe_nid, unsigned char *pass, ssize_t passlen, const EVP_CIPHER *kekciph) { CMS_RecipientInfo *ri = NULL; CMS_EnvelopedData *env; CMS_PasswordRecipientInfo *pwri; EVP_CIPHER_CTX ctx; X509_ALGOR *encalg = NULL; unsigned char iv[EVP_MAX_IV_LENGTH]; int ivlen; env = cms_get0_enveloped(cms); if (!env) return NULL; if (wrap_nid <= 0) wrap_nid = NID_id_alg_PWRI_KEK; if (pbe_nid <= 0) pbe_nid = NID_id_pbkdf2; /* Get from enveloped data */ if (kekciph == NULL) kekciph = env->encryptedContentInfo->cipher; if (kekciph == NULL) { CMSerr(CMS_F_CMS_ADD0_RECIPIENT_PASSWORD, CMS_R_NO_CIPHER); return NULL; } if (wrap_nid != NID_id_alg_PWRI_KEK) { CMSerr(CMS_F_CMS_ADD0_RECIPIENT_PASSWORD, CMS_R_UNSUPPORTED_KEY_ENCRYPTION_ALGORITHM); return NULL; } /* Setup algorithm identifier for cipher */ encalg = X509_ALGOR_new(); EVP_CIPHER_CTX_init(&ctx); if (EVP_EncryptInit_ex(&ctx, kekciph, NULL, NULL, NULL) <= 0) { CMSerr(CMS_F_CMS_ADD0_RECIPIENT_PASSWORD, ERR_R_EVP_LIB); goto err; } ivlen = EVP_CIPHER_CTX_iv_length(&ctx); if (ivlen > 0) { arc4random_buf(iv, ivlen); if (EVP_EncryptInit_ex(&ctx, NULL, NULL, NULL, iv) <= 0) { CMSerr(CMS_F_CMS_ADD0_RECIPIENT_PASSWORD, ERR_R_EVP_LIB); goto err; } encalg->parameter = ASN1_TYPE_new(); if (!encalg->parameter) { CMSerr(CMS_F_CMS_ADD0_RECIPIENT_PASSWORD, ERR_R_MALLOC_FAILURE); goto err; } if (EVP_CIPHER_param_to_asn1(&ctx, encalg->parameter) <= 0) { CMSerr(CMS_F_CMS_ADD0_RECIPIENT_PASSWORD, CMS_R_CIPHER_PARAMETER_INITIALISATION_ERROR); goto err; } } encalg->algorithm = OBJ_nid2obj(EVP_CIPHER_CTX_type(&ctx)); EVP_CIPHER_CTX_cleanup(&ctx); /* Initialize recipient info */ ri = M_ASN1_new_of(CMS_RecipientInfo); if (!ri) goto merr; ri->d.pwri = M_ASN1_new_of(CMS_PasswordRecipientInfo); if (!ri->d.pwri) goto merr; ri->type = CMS_RECIPINFO_PASS; pwri = ri->d.pwri; /* Since this is overwritten, free up empty structure already there */ X509_ALGOR_free(pwri->keyEncryptionAlgorithm); pwri->keyEncryptionAlgorithm = X509_ALGOR_new(); if (!pwri->keyEncryptionAlgorithm) goto merr; pwri->keyEncryptionAlgorithm->algorithm = OBJ_nid2obj(wrap_nid); pwri->keyEncryptionAlgorithm->parameter = ASN1_TYPE_new(); if (!pwri->keyEncryptionAlgorithm->parameter) goto merr; if (!ASN1_item_pack(encalg, ASN1_ITEM_rptr(X509_ALGOR), &pwri->keyEncryptionAlgorithm->parameter->value.sequence)) goto merr; pwri->keyEncryptionAlgorithm->parameter->type = V_ASN1_SEQUENCE; X509_ALGOR_free(encalg); encalg = NULL; /* Setup PBE algorithm */ pwri->keyDerivationAlgorithm = PKCS5_pbkdf2_set(iter, NULL, 0, -1, -1); if (!pwri->keyDerivationAlgorithm) goto err; CMS_RecipientInfo_set0_password(ri, pass, passlen); pwri->version = 0; if (!sk_CMS_RecipientInfo_push(env->recipientInfos, ri)) goto merr; return ri; merr: CMSerr(CMS_F_CMS_ADD0_RECIPIENT_PASSWORD, ERR_R_MALLOC_FAILURE); err: EVP_CIPHER_CTX_cleanup(&ctx); if (ri) M_ASN1_free_of(ri, CMS_RecipientInfo); if (encalg) X509_ALGOR_free(encalg); return NULL; }