1 // Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef OPENSSL_HEADER_CRYPTO_PEM_INTERNAL_H 16 #define OPENSSL_HEADER_CRYPTO_PEM_INTERNAL_H 17 18 #include <openssl/pem.h> 19 20 #ifdef __cplusplus 21 extern "C" { 22 #endif 23 24 25 // PEM_get_EVP_CIPHER_INFO decodes |header| as a PEM header block and writes the 26 // specified cipher and IV to |cipher|. It returns one on success and zero on 27 // error. |header| must be a NUL-terminated string. If |header| does not 28 // specify encryption, this function will return success and set 29 // |cipher->cipher| to NULL. 30 int PEM_get_EVP_CIPHER_INFO(const char *header, EVP_CIPHER_INFO *cipher); 31 32 // PEM_do_header decrypts |*len| bytes from |data| in-place according to the 33 // information in |cipher|. On success, it returns one and sets |*len| to the 34 // length of the plaintext. Otherwise, it returns zero. If |cipher| specifies 35 // encryption, the key is derived from a password returned from |callback|. 36 int PEM_do_header(const EVP_CIPHER_INFO *cipher, uint8_t *data, long *len, 37 pem_password_cb *callback, void *u); 38 39 40 #ifdef __cplusplus 41 } // extern "C" 42 #endif 43 44 #endif // OPENSSL_HEADER_CRYPTO_PEM_INTERNAL_H 45