a8d7d971b1
This is the version of CCAN which CLN was using at the time these were taken. Unfortunately lots of whitespace has been changed, but AFAICT no source changes. Here's the command I ran (with ../ccan checked out to 1ae4c432): ``` make update-ccan CCAN_NEW="alignof array_size build_assert check_type container_of cppmagic likely list mem short_types str structeq take tal tal/str typesafe_cb utf8 endian crypto/sha256" ``` Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: William Casarin <jb55@jb55.com>
62 lines
1.4 KiB
Plaintext
62 lines
1.4 KiB
Plaintext
#include "config.h"
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#include <stdio.h>
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#include <string.h>
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/**
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* crypto/sha256 - implementation of SHA-2 with 256 bit digest.
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*
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* This code is either a wrapper for openssl (if CCAN_CRYPTO_SHA256_USE_OPENSSL
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* is defined) or an open-coded implementation based on Bitcoin's.
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*
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* License: BSD-MIT
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* Maintainer: Rusty Russell <rusty@rustcorp.com.au>
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*
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* Example:
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* #include <ccan/crypto/sha256/sha256.h>
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* #include <err.h>
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* #include <stdio.h>
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* #include <string.h>
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*
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* // Simple demonstration: idential strings will have the same hash, but
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* // two different strings will not.
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* int main(int argc, char *argv[])
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* {
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* struct sha256 hash1, hash2;
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*
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* if (argc != 3)
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* errx(1, "Usage: %s <string1> <string2>", argv[0]);
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*
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* sha256(&hash1, argv[1], strlen(argv[1]));
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* sha256(&hash2, argv[2], strlen(argv[2]));
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* printf("Hash is %s\n", memcmp(&hash1, &hash2, sizeof(hash1))
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* ? "different" : "same");
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* return 0;
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* }
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*/
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int main(int argc, char *argv[])
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{
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/* Expect exactly one argument */
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if (argc != 2)
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return 1;
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if (strcmp(argv[1], "depends") == 0) {
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printf("ccan/compiler\n");
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printf("ccan/endian\n");
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return 0;
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}
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if (strcmp(argv[1], "testdepends") == 0) {
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printf("ccan/str/hex\n");
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return 0;
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}
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if (strcmp(argv[1], "libs") == 0) {
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#ifdef CCAN_CRYPTO_SHA256_USE_OPENSSL
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printf("crypto\n");
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#endif
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return 0;
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}
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return 1;
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}
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