diff options
Diffstat (limited to 'crypto/pem')
-rw-r--r-- | crypto/pem/pem_pkey.c | 154 |
1 files changed, 150 insertions, 4 deletions
diff --git a/crypto/pem/pem_pkey.c b/crypto/pem/pem_pkey.c index cbb07a1356..3f0a9e4fef 100644 --- a/crypto/pem/pem_pkey.c +++ b/crypto/pem/pem_pkey.c @@ -28,10 +28,11 @@ int ossl_pem_check_suffix(const char *pem_str, const char *suffix); -static EVP_PKEY *pem_read_bio_key(BIO *bp, EVP_PKEY **x, - pem_password_cb *cb, void *u, - OSSL_LIB_CTX *libctx, const char *propq, - int selection) +static EVP_PKEY *pem_read_bio_key_decoder(BIO *bp, EVP_PKEY **x, + pem_password_cb *cb, void *u, + OSSL_LIB_CTX *libctx, + const char *propq, + int selection) { EVP_PKEY *pkey = NULL; OSSL_DECODER_CTX *dctx = NULL; @@ -69,6 +70,151 @@ static EVP_PKEY *pem_read_bio_key(BIO *bp, EVP_PKEY **x, return pkey; } +static EVP_PKEY *pem_read_bio_key_legacy(BIO *bp, EVP_PKEY **x, + pem_password_cb *cb, void *u, + OSSL_LIB_CTX *libctx, + const char *propq, + int selection) +{ + char *nm = NULL; + const unsigned char *p = NULL; + unsigned char *data = NULL; + long len; + int slen; + EVP_PKEY *ret = NULL; + + ERR_set_mark(); /* not interested in PEM read errors */ + if (selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) { + if (!PEM_bytes_read_bio_secmem(&data, &len, &nm, + PEM_STRING_EVP_PKEY, + bp, cb, u)) { + ERR_pop_to_mark(); + return NULL; + } + } else { + const char *pem_string = PEM_STRING_PARAMETERS; + + if (selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) + pem_string = PEM_STRING_PUBLIC; + if (!PEM_bytes_read_bio(&data, &len, &nm, + pem_string, + bp, cb, u)) { + ERR_pop_to_mark(); + return NULL; + } + } + ERR_clear_last_mark(); + p = data; + + if (strcmp(nm, PEM_STRING_PKCS8INF) == 0) { + PKCS8_PRIV_KEY_INFO *p8inf; + + if ((p8inf = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len)) == NULL) + goto p8err; + ret = evp_pkcs82pkey_legacy(p8inf, libctx, propq); + if (x != NULL) { + EVP_PKEY_free(*x); + *x = ret; + } + PKCS8_PRIV_KEY_INFO_free(p8inf); + } else if (strcmp(nm, PEM_STRING_PKCS8) == 0) { + PKCS8_PRIV_KEY_INFO *p8inf; + X509_SIG *p8; + int klen; + char psbuf[PEM_BUFSIZE]; + + if ((p8 = d2i_X509_SIG(NULL, &p, len)) == NULL) + goto p8err; + if (cb != NULL) + klen = cb(psbuf, PEM_BUFSIZE, 0, u); + else + klen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u); + if (klen < 0) { + ERR_raise(ERR_LIB_PEM, PEM_R_BAD_PASSWORD_READ); + X509_SIG_free(p8); + goto err; + } + p8inf = PKCS8_decrypt(p8, psbuf, klen); + X509_SIG_free(p8); + OPENSSL_cleanse(psbuf, klen); + if (p8inf == NULL) + goto p8err; + ret = evp_pkcs82pkey_legacy(p8inf, libctx, propq); + if (x != NULL) { + EVP_PKEY_free(*x); + *x = ret; + } + PKCS8_PRIV_KEY_INFO_free(p8inf); + } else if ((slen = ossl_pem_check_suffix(nm, "PRIVATE KEY")) > 0) { + const EVP_PKEY_ASN1_METHOD *ameth; + ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen); + if (ameth == NULL || ameth->old_priv_decode == NULL) + goto p8err; + ret = d2i_PrivateKey(ameth->pkey_id, x, &p, len); + } else if (selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) { + ret = d2i_PUBKEY(x, &p, len); + } else if ((slen = ossl_pem_check_suffix(nm, "PARAMETERS")) > 0) { + ret = EVP_PKEY_new(); + if (ret == NULL) + goto err; + if (!EVP_PKEY_set_type_str(ret, nm, slen) + || !ret->ameth->param_decode + || !ret->ameth->param_decode(ret, &p, len)) { + EVP_PKEY_free(ret); + ret = NULL; + goto err; + } + if (x) { + EVP_PKEY_free(*x); + *x = ret; + } + } + + p8err: + if (ret == NULL) + ERR_raise(ERR_LIB_PEM, ERR_R_ASN1_LIB); + err: + OPENSSL_secure_free(nm); + OPENSSL_secure_clear_free(data, len); + return ret; +} + +static EVP_PKEY *pem_read_bio_key(BIO *bp, EVP_PKEY **x, + pem_password_cb *cb, void *u, + OSSL_LIB_CTX *libctx, + const char *propq, + int selection) +{ + EVP_PKEY *ret; + BIO *new_bio = NULL; + int pos; + + if ((pos = BIO_tell(bp)) < 0) { + new_bio = BIO_new(BIO_f_readbuffer()); + if (new_bio == NULL) + return NULL; + bp = BIO_push(new_bio, bp); + pos = BIO_tell(bp); + } + + ERR_set_mark(); + ret = pem_read_bio_key_decoder(bp, x, cb, u, libctx, propq, selection); + if (ret == NULL + && (BIO_seek(bp, pos) < 0 + || (ret = pem_read_bio_key_legacy(bp, x, cb, u, + libctx, propq, + selection)) == NULL)) + ERR_clear_last_mark(); + else + ERR_pop_to_mark(); + + if (new_bio != NULL) { + BIO_pop(new_bio); + BIO_free(new_bio); + } + return ret; +} + EVP_PKEY *PEM_read_bio_PUBKEY_ex(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u, OSSL_LIB_CTX *libctx, const char *propq) |