openssl c sha-128-cbc

From eeew, 10 Years ago, written in C, viewed 874 times.

URL https://paste.godclan.hu/view/mf2QASdR Embed

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//#include <openssl/md5.h>
#include <openssl/aes.h>
#include <openssl/evp.h>
#include <stdio.h>
#include <string.h>
 
int main(){
    unsigned char* data = malloc(128);
    size_t datalen = 0;
    const char* password = "krumpli";
    EVP_CIPHER_CTX encx;
 
    unsigned char plaintext[] = "kecske\n";
 
    //unsigned char salt[] = "nemrandom";
    unsigned char salt[8];
    RAND_pseudo_bytes(salt, sizeof salt);
    unsigned char iv[32];
    unsigned char key[32];
    unsigned char* ciphertext;
    int plaintext_len = strlen(plaintext), ciphertext_len = 0;
 
 
    EVP_BytesToKey(EVP_aes_128_cbc(), EVP_md5(), salt, password, strlen(password), 1, key, iv);
 
    int len1, len2;
    len1 = plaintext_len + AES_BLOCK_SIZE;
    ciphertext = malloc(len1);
 
    EVP_EncryptInit_ex(&encx, EVP_aes_128_cbc(), NULL, key, iv);
    EVP_EncryptUpdate(&encx, ciphertext, &len1, plaintext, plaintext_len);
    EVP_EncryptFinal(&encx, ciphertext + len1, &len2);
    ciphertext_len = len1 + len2;
 
    fwrite("Salted__", 1, 8, stdout);
    fwrite(salt, 1, 8, stdout);
    fwrite(ciphertext, 1, ciphertext_len, stdout);
 
    fputs("hurra.", stderr);
    return 0;
}
 

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//#include <openssl/md5.h>
#include <openssl/aes.h>
#include <openssl/evp.h>
#include <stdio.h>
#include <string.h>

int main(){
    unsigned char* data = malloc(128);
    size_t datalen = 0;
    const char* password = "krumpli";
    EVP_CIPHER_CTX encx;

unsigned char plaintext[] = "kecske\n";

//unsigned char salt[] = "nemrandom";
    unsigned char salt[8];
    RAND_pseudo_bytes(salt, sizeof salt);
    unsigned char iv[32];
    unsigned char key[32];
    unsigned char* ciphertext;
    int plaintext_len = strlen(plaintext), ciphertext_len = 0;

EVP_BytesToKey(EVP_aes_128_cbc(), EVP_md5(), salt, password, strlen(password), 1, key, iv);

int len1, len2;
    len1 = plaintext_len + AES_BLOCK_SIZE;
    ciphertext = malloc(len1);

EVP_EncryptInit_ex(&encx, EVP_aes_128_cbc(), NULL, key, iv);
    EVP_EncryptUpdate(&encx, ciphertext, &len1, plaintext, plaintext_len);
    EVP_EncryptFinal(&encx, ciphertext + len1, &len2);
    ciphertext_len = len1 + len2;

fwrite("Salted__", 1, 8, stdout);
    fwrite(salt, 1, 8, stdout);
    fwrite(ciphertext, 1, ciphertext_len, stdout);

fputs("hurra.", stderr);
    return 0;
}

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openssl c sha-128-cbc

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