Blame SOURCES/git-2.27.0-core-crypto-hmac.patch

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diff -ur a/builtin/receive-pack.c b/builtin/receive-pack.c
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--- a/builtin/receive-pack.c	2020-06-01 17:49:27.000000000 +0200
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+++ b/builtin/receive-pack.c	2020-06-15 15:28:48.149268576 +0200
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@@ -29,6 +29,8 @@
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 #include "commit-reach.h"
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 #include "worktree.h"
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 #include "shallow.h"
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+#include <openssl/hmac.h>	
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+#include <openssl/evp.h>
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 static const char * const receive_pack_usage[] = {
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 	N_("git receive-pack <git-dir>"),
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@@ -419,43 +421,11 @@
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 	return 0;
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 }
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-static void hmac_hash(unsigned char *out,
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+static inline void hmac_hash(unsigned char *out,
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 		      const char *key_in, size_t key_len,
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 		      const char *text, size_t text_len)
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 {
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-	unsigned char key[GIT_MAX_BLKSZ];
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-	unsigned char k_ipad[GIT_MAX_BLKSZ];
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-	unsigned char k_opad[GIT_MAX_BLKSZ];
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-	int i;
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-	git_hash_ctx ctx;
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-
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-	/* RFC 2104 2. (1) */
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-	memset(key, '\0', GIT_MAX_BLKSZ);
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-	if (the_hash_algo->blksz < key_len) {
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-		the_hash_algo->init_fn(&ctx;;
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-		the_hash_algo->update_fn(&ctx, key_in, key_len);
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-		the_hash_algo->final_fn(key, &ctx;;
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-	} else {
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-		memcpy(key, key_in, key_len);
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-	}
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-
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-	/* RFC 2104 2. (2) & (5) */
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-	for (i = 0; i < sizeof(key); i++) {
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-		k_ipad[i] = key[i] ^ 0x36;
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-		k_opad[i] = key[i] ^ 0x5c;
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-	}
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-
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-	/* RFC 2104 2. (3) & (4) */
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-	the_hash_algo->init_fn(&ctx;;
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-	the_hash_algo->update_fn(&ctx, k_ipad, sizeof(k_ipad));
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-	the_hash_algo->update_fn(&ctx, text, text_len);
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-	the_hash_algo->final_fn(out, &ctx;;
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-
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-	/* RFC 2104 2. (6) & (7) */
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-	the_hash_algo->init_fn(&ctx;;
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-	the_hash_algo->update_fn(&ctx, k_opad, sizeof(k_opad));
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-	the_hash_algo->update_fn(&ctx, out, the_hash_algo->rawsz);
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-	the_hash_algo->final_fn(out, &ctx;;
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+	HMAC(EVP_sha1(), key_in, key_len, text, text_len, out, NULL);
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 }
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 static char *prepare_push_cert_nonce(const char *path, timestamp_t stamp)
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diff -ur a/Makefile b/Makefile
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--- a/Makefile	2020-06-01 17:49:27.000000000 +0200
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+++ b/Makefile	2020-06-15 15:00:45.212758547 +0200
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@@ -1830,6 +1830,8 @@
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 	BASIC_CFLAGS += -DHAVE_GETDELIM
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 endif
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+EXTLIBS += -lcrypto
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+
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 ifneq ($(PROCFS_EXECUTABLE_PATH),)
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 	procfs_executable_path_SQ = $(subst ','\'',$(PROCFS_EXECUTABLE_PATH))
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 	BASIC_CFLAGS += '-DPROCFS_EXECUTABLE_PATH="$(procfs_executable_path_SQ)"'