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39 lines
774 B
C
39 lines
774 B
C
#include <stdint.h>
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#include <string.h>
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#include <stdio.h>
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#include <openssl/evp.h>
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void hextorb(uint8_t* hex, uint8_t* rb)
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{
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while(sscanf(hex, "%2x", rb) == 1)
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{
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hex += 2;
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rb += 1;
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}
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*rb = '\0';
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}
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int main(int argc, char** argv)
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{
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uint8_t k_user[2048];
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uint8_t salt[2048];
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uint8_t key[4096];
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uint32_t key_length = atoi(argv[1]);
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uint32_t iteration_count = atoi(argv[2]);
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hextorb(argv[3], salt);
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uint32_t salt_length = strlen(argv[3]) / 2;
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fgets(k_user, 2048, stdin);
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uint32_t k_user_length = strlen(k_user);
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if(k_user[k_user_length - 1] == '\n') {
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k_user[k_user_length - 1] = '\0';
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}
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PKCS5_PBKDF2_HMAC(k_user, k_user_length, salt, salt_length, iteration_count, EVP_sha512(), key_length, key);
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fwrite(key, 1, key_length, stdout);
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return 0;
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}
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