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Change sha3 implementation used. Initial unsaved data API.
Dario Rodriguez authored on 02/03/2019 16:12:12
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+#ifndef SHA3_H |
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+#define SHA3_H |
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+ |
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+/* ------------------------------------------------------------------------- |
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+ * Works when compiled for either 32-bit or 64-bit targets, optimized for |
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+ * 64 bit. |
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+ * |
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+ * Canonical implementation of Init/Update/Finalize for SHA-3 byte input. |
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+ * |
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+ * SHA3-256, SHA3-384, SHA-512 are implemented. SHA-224 can easily be added. |
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+ * |
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+ * Based on code from http://keccak.noekeon.org/ . |
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+ * |
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+ * I place the code that I wrote into public domain, free to use. |
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+ * |
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+ * I would appreciate if you give credits to this work if you used it to |
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+ * write or test * your code. |
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+ * |
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+ * Aug 2015. Andrey Jivsov. crypto@brainhub.org |
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+ * ---------------------------------------------------------------------- */ |
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+ |
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+/* 'Words' here refers to uint64_t */ |
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+#define SHA3_KECCAK_SPONGE_WORDS \ |
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+ (((1600)/8/*bits to byte*/)/sizeof(uint64_t)) |
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+typedef struct sha3_context_ {
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+ uint64_t saved; /* the portion of the input message that we |
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+ * didn't consume yet */ |
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+ union { /* Keccak's state */
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+ uint64_t s[SHA3_KECCAK_SPONGE_WORDS]; |
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+ uint8_t sb[SHA3_KECCAK_SPONGE_WORDS * 8]; |
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+ }; |
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+ unsigned byteIndex; /* 0..7--the next byte after the set one |
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+ * (starts from 0; 0--none are buffered) */ |
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+ unsigned wordIndex; /* 0..24--the next word to integrate input |
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+ * (starts from 0) */ |
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+ unsigned capacityWords; /* the double size of the hash output in |
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+ * words (e.g. 16 for Keccak 512) */ |
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+} sha3_context; |
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+ |
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+enum SHA3_FLAGS {
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+ SHA3_FLAGS_NONE=0, |
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+ SHA3_FLAGS_KECCAK=1 |
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+}; |
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+ |
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+enum SHA3_RETURN {
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+ SHA3_RETURN_OK=0, |
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+ SHA3_RETURN_BAD_PARAMS=1 |
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+}; |
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+typedef enum SHA3_RETURN sha3_return_t; |
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+ |
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+/* For Init or Reset call these: */ |
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+sha3_return_t sha3_Init(void *priv, unsigned bitSize); |
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+ |
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+void sha3_Init256(void *priv); |
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+void sha3_Init384(void *priv); |
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+void sha3_Init512(void *priv); |
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+ |
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+enum SHA3_FLAGS sha3_SetFlags(void *priv, enum SHA3_FLAGS); |
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+ |
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+void sha3_Update(void *priv, void const *bufIn, size_t len); |
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+ |
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+void const *sha3_Finalize(void *priv); |
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+ |
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+/* Single-call hashing */ |
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+sha3_return_t sha3_HashBuffer( |
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+ unsigned bitSize, /* 256, 384, 512 */ |
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+ enum SHA3_FLAGS flags, /* SHA3_FLAGS_NONE or SHA3_FLAGS_KECCAK */ |
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+ const void *in, unsigned inBytes, |
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+ void *out, unsigned outBytes ); /* up to bitSize/8; truncation OK */ |
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+ |
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+#endif |