From 3e440ea0aba0660f356a3e5b9fc366d5d6960847 Mon Sep 17 00:00:00 2001 From: Eric Wong Date: Tue, 1 Aug 2023 02:54:53 +0000 Subject: sha256: avoid functions deprecated in OpenSSL 3+ OpenSSL 3+ deprecates the SHA256_Init, SHA256_Update, and SHA256_Final functions, leading to errors when building with `DEVELOPER=1'. Use the newer EVP_* API with OpenSSL 3+ despite being more error-prone and less efficient due to heap allocations. Signed-off-by: Eric Wong Signed-off-by: Junio C Hamano --- sha256/openssl.h | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 sha256/openssl.h (limited to 'sha256') diff --git a/sha256/openssl.h b/sha256/openssl.h new file mode 100644 index 0000000000..c1083d9491 --- /dev/null +++ b/sha256/openssl.h @@ -0,0 +1,49 @@ +/* wrappers for the EVP API of OpenSSL 3+ */ +#ifndef SHA256_OPENSSL_H +#define SHA256_OPENSSL_H +#include + +struct openssl_SHA256_CTX { + EVP_MD_CTX *ectx; +}; + +typedef struct openssl_SHA256_CTX openssl_SHA256_CTX; + +static inline void openssl_SHA256_Init(struct openssl_SHA256_CTX *ctx) +{ + const EVP_MD *type = EVP_sha256(); + + ctx->ectx = EVP_MD_CTX_new(); + if (!ctx->ectx) + die("EVP_MD_CTX_new: out of memory"); + + EVP_DigestInit_ex(ctx->ectx, type, NULL); +} + +static inline void openssl_SHA256_Update(struct openssl_SHA256_CTX *ctx, + const void *data, + size_t len) +{ + EVP_DigestUpdate(ctx->ectx, data, len); +} + +static inline void openssl_SHA256_Final(unsigned char *digest, + struct openssl_SHA256_CTX *ctx) +{ + EVP_DigestFinal_ex(ctx->ectx, digest, NULL); + EVP_MD_CTX_free(ctx->ectx); +} + +static inline void openssl_SHA256_Clone(struct openssl_SHA256_CTX *dst, + const struct openssl_SHA256_CTX *src) +{ + EVP_MD_CTX_copy_ex(dst->ectx, src->ectx); +} + +#define platform_SHA256_CTX openssl_SHA256_CTX +#define platform_SHA256_Init openssl_SHA256_Init +#define platform_SHA256_Clone openssl_SHA256_Clone +#define platform_SHA256_Update openssl_SHA256_Update +#define platform_SHA256_Final openssl_SHA256_Final + +#endif /* SHA256_OPENSSL_H */ -- cgit v1.2.3