Behind the scenes, in the source code for /ext/openssl/openssl.c: EVP_EncryptInit_ex(&cipher_ctx, NULL, NULL, key, (unsigned char *)iv); if (options & OPENSSL_ZERO_PADDING) { EVP_CIPHER_CTX_set_padding(&cipher_ctx, 0); }And later: if (options & OPENSSL_RAW_DATA) { outbuf[...
EVP_EncryptInit_ex(&ctx, EVP_bf_cbc(), NULL, key, iv); if(!EVP_EncryptUpdate(&ctx, outbuf, &outlen, intext, strlen(intext))) { /* 出错处理*/ return 0; } //注意,传入给以下函数的输出缓存參数必须注意不能覆盖了原来的加密输出的数据 if(!EVP_EncryptFinal_ex(&ctx, outbuf + outl...
if(1 != EVP_EncryptInit_ex(ctx, EVP_aes_256_cbc(), NULL, key, iv)) handleErrors(); /* Provide the message to be encrypted, and obtain the encrypted output. * EVP_EncryptUpdate can be called multiple times if necessary */ if(1 != EVP_EncryptUpdate(ctx, ciphertext, &len, plaint...
errstr = "ERROR: EVP_EncryptInit_ex failed. OpenSSL error:" + errstr; write_text_to_log_file(errstr); EVP_CIPHER_CTX_cleanup(ctx); return -1; } EVP_CIPHER_CTX_set_padding(ctx, EVP_PADDING_PKCS7); if (1 != EVP_EncryptUpdate(ctx, outbuf, &temp, in, in_len)) { string errstr ...
EVP_EncryptInit_ex(&ctx,EVP_bf_cbc(),NULL,key,iv); if(!EVP_EncryptUpdate(&ctx,outbuf,&outlen,intext,strlen(intext))) { /*出错处理*/ return0; } //注意,传入给下面函数的输出缓存参数必须注意不能覆盖了原来的加密输出的数据 if(!EVP_EncryptFinal_ex(&ctx,outbuf+outlen,&tmplen)) ...
【EVP_CIPHER_param_to_asn1】 该函数设置算法结构的參数。一般来说设置的值包含了全部參数和一个IV值。假设算法有IV,那么调用该函数时IV是必须设置的。该函数必须在所设置的算法结构使用之前(如调用EVP_EncryptUpdate和EVP_DecryptUpdate函数之前)调用。
http://www./docs/crypto/EVP_EncryptInit.html# 当我通过valgring运行它并得到以下报告: ==2371== 176 bytes in 1 blocks are still reachable in loss record 3 of 6 ==2371== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64- linux.so) ...
基本系列函数主要是进行基本的加密和解密操作的函数,他们的定义如下(openssl\evp.h): int EVP_CIPHER_CTX_init(EVP_CIPHER_CTX* a); int EVP_EncryptInit_ex(EVP_CIPHER_CTX* ctx,const EVP_CIPHER*type,ENGINE*impl,unsigned char*key,unsigned char*iv); int EVP_EncryptUpdate(EVP_CIPHER_CTX* ctx,...
EVP_EncryptInit_ex(&cipher_ctx, NULL, NULL, key, (unsigned char *)iv); if (options & OPENSSL_ZERO_PADDING) { EVP_CIPHER_CTX_set_padding(&cipher_ctx, 0); } And later: if (options & OPENSSL_RAW_DATA) { outbuf[outlen] = '\0'; ...
3、P_EncryptInit_ex(ctx, EVP_aes_128_cbc() .中的EVP_aes_128_cbc 前硬编码后续可以优化*/#define AES_BLOCK_SIZE 16unsigned char *AES_CBC_PKCS5_BASE64_Encrypt(unsigned char *src, int srcLen, unsigned char *key, int keyLen, int*outLen, unsigned char *iv)EVP_CIPHER_CTX *ctx = NULL...