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openssl: add openssl_digest_size()

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Add function to get digest hash size for provided digest name.
This commit is contained in:
Dan Streetman
2023-09-28 16:44:13 -04:00
parent 081c50ed3c
commit c52a003dc8
3 changed files with 85 additions and 0 deletions
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src/shared/openssl-util.h
+3
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@@ -39,6 +39,7 @@ DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(SSL*, SSL_free, NULL);
DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(BIO*, BIO_free, NULL);
DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(EVP_MD_CTX*, EVP_MD_CTX_free, NULL);
#if OPENSSL_VERSION_MAJOR >= 3
DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(EVP_MD*, EVP_MD_free, NULL);
DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(OSSL_PARAM*, OSSL_PARAM_free, NULL);
DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(OSSL_PARAM_BLD*, OSSL_PARAM_BLD_free, NULL);
#else
@@ -57,6 +58,8 @@ int openssl_pkey_from_pem(const void *pem, size_t pem_size, EVP_PKEY **ret);
int openssl_hash(const EVP_MD *alg, const void *msg, size_t msg_len, uint8_t *ret_hash, size_t *ret_hash_len);
int openssl_digest_size(const char *digest_alg, size_t *ret_digest_size);
int rsa_encrypt_bytes(EVP_PKEY *pkey, const void *decrypted_key, size_t decrypted_key_size, void **ret_encrypt_key, size_t *ret_encrypt_key_size);
int rsa_pkey_to_suitable_key_size(EVP_PKEY *pkey, size_t *ret_suitable_key_size);