Rename SHA3 internal functions so they have an ossl_ prefix

These are: keccak_kmac_init(), sha3_final(), sha3_init(), sha3_reset() and
sha3_update().

Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13417)

3 files changed, 17 insertions, 16 deletions

diff --git a/crypto/sha/sha3.c b/crypto/sha/sha3.c
index fafa3556f3..4aa008f984 100644
--- a/crypto/sha/sha3.c
+++ b/crypto/sha/sha3.c
@@ -12,18 +12,18 @@
 
 void SHA3_squeeze(uint64_t A[5][5], unsigned char *out, size_t len, size_t r);
 
-void sha3_reset(KECCAK1600_CTX *ctx)
+void ossl_sha3_reset(KECCAK1600_CTX *ctx)
 {
     memset(ctx->A, 0, sizeof(ctx->A));
     ctx->bufsz = 0;
 }
 
-int sha3_init(KECCAK1600_CTX *ctx, unsigned char pad, size_t bitlen)
+int ossl_sha3_init(KECCAK1600_CTX *ctx, unsigned char pad, size_t bitlen)
 {
     size_t bsz = SHA3_BLOCKSIZE(bitlen);
 
     if (bsz <= sizeof(ctx->buf)) {
-        sha3_reset(ctx);
+        ossl_sha3_reset(ctx);
         ctx->block_size = bsz;
         ctx->md_size = bitlen / 8;
         ctx->pad = pad;
@@ -33,16 +33,16 @@ int sha3_init(KECCAK1600_CTX *ctx, unsigned char pad, size_t bitlen)
     return 0;
 }
 
-int keccak_kmac_init(KECCAK1600_CTX *ctx, unsigned char pad, size_t bitlen)
+int ossl_keccak_kmac_init(KECCAK1600_CTX *ctx, unsigned char pad, size_t bitlen)
 {
-    int ret = sha3_init(ctx, pad, bitlen);
+    int ret = ossl_sha3_init(ctx, pad, bitlen);
 
     if (ret)
         ctx->md_size *= 2;
     return ret;
 }
 
-int sha3_update(KECCAK1600_CTX *ctx, const void *_inp, size_t len)
+int ossl_sha3_update(KECCAK1600_CTX *ctx, const void *_inp, size_t len)
 {
     const unsigned char *inp = _inp;
     size_t bsz = ctx->block_size;
@@ -84,7 +84,7 @@ int sha3_update(KECCAK1600_CTX *ctx, const void *_inp, size_t len)
     return 1;
 }
 
-int sha3_final(unsigned char *md, KECCAK1600_CTX *ctx)
+int ossl_sha3_final(unsigned char *md, KECCAK1600_CTX *ctx)
 {
     size_t bsz = ctx->block_size;
     size_t num = ctx->bufsz;
diff --git a/include/internal/sha3.h b/include/internal/sha3.h
index 81ba41ac0d..7cd4630c27 100644
--- a/include/internal/sha3.h
+++ b/include/internal/sha3.h
@@ -40,11 +40,12 @@ struct keccak_st {
     PROV_SHA3_METHOD meth;
 };
 
-void sha3_reset(KECCAK1600_CTX *ctx);
-int sha3_init(KECCAK1600_CTX *ctx, unsigned char pad, size_t bitlen);
-int keccak_kmac_init(KECCAK1600_CTX *ctx, unsigned char pad, size_t bitlen);
-int sha3_update(KECCAK1600_CTX *ctx, const void *_inp, size_t len);
-int sha3_final(unsigned char *md, KECCAK1600_CTX *ctx);
+void ossl_sha3_reset(KECCAK1600_CTX *ctx);
+int ossl_sha3_init(KECCAK1600_CTX *ctx, unsigned char pad, size_t bitlen);
+int ossl_keccak_kmac_init(KECCAK1600_CTX *ctx, unsigned char pad,
+                          size_t bitlen);
+int ossl_sha3_update(KECCAK1600_CTX *ctx, const void *_inp, size_t len);
+int ossl_sha3_final(unsigned char *md, KECCAK1600_CTX *ctx);
 
 size_t SHA3_absorb(uint64_t A[5][5], const unsigned char *inp, size_t len,
                    size_t r);
diff --git a/providers/implementations/digests/sha3_prov.c b/providers/implementations/digests/sha3_prov.c
index 38e2beb1e7..6b44792529 100644
--- a/providers/implementations/digests/sha3_prov.c
+++ b/providers/implementations/digests/sha3_prov.c
@@ -50,7 +50,7 @@ static int keccak_init(void *vctx)
     if (!ossl_prov_is_running())
         return 0;
     /* The newctx() handles most of the ctx fixed setup. */
-    sha3_reset((KECCAK1600_CTX *)vctx);
+    ossl_sha3_reset((KECCAK1600_CTX *)vctx);
     return 1;
 }
 
@@ -118,7 +118,7 @@ static size_t generic_sha3_absorb(void *vctx, const void *inp, size_t len)
 
 static int generic_sha3_final(unsigned char *md, void *vctx)
 {
-    return sha3_final(md, (KECCAK1600_CTX *)vctx);
+    return ossl_sha3_final(md, (KECCAK1600_CTX *)vctx);
 }
 
 static PROV_SHA3_METHOD sha3_generic_md =
@@ -198,7 +198,7 @@ static void *name##_newctx(void *provctx)                                      \
                                                                                \
     if (ctx == NULL)                                                           \
         return NULL;                                                           \
-    sha3_init(ctx, pad, bitlen);                                               \
+    ossl_sha3_init(ctx, pad, bitlen);                                          \
     SHA3_SET_MD(uname, typ)                                                    \
     return ctx;                                                                \
 }
@@ -212,7 +212,7 @@ static void *uname##_newctx(void *provctx)                                     \
                                                                                \
     if (ctx == NULL)                                                           \
         return NULL;                                                           \
-    keccak_kmac_init(ctx, pad, bitlen);                                        \
+    ossl_keccak_kmac_init(ctx, pad, bitlen);                                   \
     ctx->meth = sha3_generic_md;                                               \
     return ctx;                                                                \
 }