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50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
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/* wrappers for the EVP API of OpenSSL 3+ */
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#ifndef SHA256_OPENSSL_H
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#define SHA256_OPENSSL_H
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#include <openssl/evp.h>
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struct openssl_SHA256_CTX {
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EVP_MD_CTX *ectx;
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};
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typedef struct openssl_SHA256_CTX openssl_SHA256_CTX;
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static inline void openssl_SHA256_Init(struct openssl_SHA256_CTX *ctx)
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{
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const EVP_MD *type = EVP_sha256();
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ctx->ectx = EVP_MD_CTX_new();
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if (!ctx->ectx)
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die("EVP_MD_CTX_new: out of memory");
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EVP_DigestInit_ex(ctx->ectx, type, NULL);
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}
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static inline void openssl_SHA256_Update(struct openssl_SHA256_CTX *ctx,
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const void *data,
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size_t len)
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{
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EVP_DigestUpdate(ctx->ectx, data, len);
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}
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static inline void openssl_SHA256_Final(unsigned char *digest,
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struct openssl_SHA256_CTX *ctx)
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{
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EVP_DigestFinal_ex(ctx->ectx, digest, NULL);
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EVP_MD_CTX_free(ctx->ectx);
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}
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static inline void openssl_SHA256_Clone(struct openssl_SHA256_CTX *dst,
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const struct openssl_SHA256_CTX *src)
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{
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EVP_MD_CTX_copy_ex(dst->ectx, src->ectx);
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}
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#define platform_SHA256_CTX openssl_SHA256_CTX
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#define platform_SHA256_Init openssl_SHA256_Init
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#define platform_SHA256_Clone openssl_SHA256_Clone
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#define platform_SHA256_Update openssl_SHA256_Update
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#define platform_SHA256_Final openssl_SHA256_Final
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#endif /* SHA256_OPENSSL_H */
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