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47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
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/* Copyright (c) 2012-2013, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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/* Formatting and parsing code for crypto-related data structures. */
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#define CRYPTO_CURVE25519_PRIVATE
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#include "orconfig.h"
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#include "crypto.h"
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#include "crypto_curve25519.h"
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#include "util.h"
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#include "torlog.h"
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int
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curve25519_public_to_base64(char *output,
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const curve25519_public_key_t *pkey)
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{
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char buf[128];
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base64_encode(buf, sizeof(buf),
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(const char*)pkey->public_key, CURVE25519_PUBKEY_LEN);
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buf[CURVE25519_BASE64_PADDED_LEN] = '\0';
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memcpy(output, buf, CURVE25519_BASE64_PADDED_LEN+1);
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return 0;
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}
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int
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curve25519_public_from_base64(curve25519_public_key_t *pkey,
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const char *input)
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{
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size_t len = strlen(input);
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if (len == CURVE25519_BASE64_PADDED_LEN - 1) {
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/* not padded */
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return digest256_from_base64((char*)pkey->public_key, input);
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} else if (len == CURVE25519_BASE64_PADDED_LEN) {
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char buf[128];
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if (base64_decode(buf, sizeof(buf), input, len) != CURVE25519_PUBKEY_LEN)
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return -1;
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memcpy(pkey->public_key, buf, CURVE25519_PUBKEY_LEN);
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return 0;
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} else {
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return -1;
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}
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}
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