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#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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