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34 lines
1.1 KiB
C
34 lines
1.1 KiB
C
#ifndef TREZORHAL_HASH_PROCESSOR_H_
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#define TREZORHAL_HASH_PROCESSOR_H_
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#include <stdint.h>
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#define HASH_SHA256_BUFFER_SIZE 4
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typedef struct {
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uint32_t length; /*!< nb bytes in buffer */
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uint8_t buffer[HASH_SHA256_BUFFER_SIZE]; /*!< data being processed */
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} hash_sha265_context_t;
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// Initialize the hash processor
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void hash_processor_init(void);
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// Calculate SHA256 hash of data
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// for best performance, data should be 32-bit aligned - as this allows DMA to
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// be used
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void hash_processor_sha256_calc(const uint8_t *data, uint32_t len,
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uint8_t *hash);
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// Initialize the hash context
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// This serves for calculating hashes of multiple data blocks
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void hash_processor_sha256_init(hash_sha265_context_t *ctx);
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// Feed the hash next chunk of data
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void hash_processor_sha256_update(hash_sha265_context_t *ctx,
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const uint8_t *data, uint32_t len);
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// Finalize the hash calculation, retrieve the digest
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void hash_processor_sha256_final(hash_sha265_context_t *ctx, uint8_t *output);
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#endif
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