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https://github.com/jedisct1/libsodium.git
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43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
#define TEST_NAME "kdf_hkdf4"
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#include "cmptest.h"
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int
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main(void)
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{
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unsigned char prk256[crypto_kdf_hkdf_sha256_KEYBYTES];
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unsigned char prk512[crypto_kdf_hkdf_sha512_KEYBYTES];
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unsigned char out256[256];
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unsigned char out512[256];
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char hex[65];
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crypto_kdf_hkdf_sha256_extract(prk256, NULL, 0,
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(const unsigned char *) "input key material", 18);
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assert(crypto_kdf_hkdf_sha256_expand(out256, 100, "context", 7, prk256) == 0);
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sodium_bin2hex(hex, sizeof hex, out256, 32);
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printf("sha256 expand 100 first 32: %s\n", hex);
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sodium_bin2hex(hex, sizeof hex, out256 + 64, 32);
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printf("sha256 expand 100 bytes 64-95: %s\n", hex);
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crypto_kdf_hkdf_sha512_extract(prk512, NULL, 0,
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(const unsigned char *) "input key material", 18);
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assert(crypto_kdf_hkdf_sha512_expand(out512, 200, "context", 7, prk512) == 0);
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sodium_bin2hex(hex, sizeof hex, out512, 32);
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printf("sha512 expand 200 first 32: %s\n", hex);
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sodium_bin2hex(hex, sizeof hex, out512 + 128, 32);
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printf("sha512 expand 200 bytes 128-159: %s\n", hex);
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assert(crypto_kdf_hkdf_sha512_expand(out512, 128, "ctx2", 4, prk512) == 0);
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sodium_bin2hex(hex, sizeof hex, out512 + 64, 32);
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printf("sha512 expand 128 second block: %s\n", hex);
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assert(crypto_kdf_hkdf_sha512_expand(out512, 64, "ctx3", 4, prk512) == 0);
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sodium_bin2hex(hex, sizeof hex, out512, 32);
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printf("sha512 expand 64: %s\n", hex);
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printf("ok\n");
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return 0;
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}
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