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SourceVuESP-IDF Framework and ExamplesESP-IDFtc_sha256_update()

tc_sha256_update() function

SHA256 update procedure Hashes data_length bytes addressed by data into state s

Syntax

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Summary

Declaration

Definition

from sha256.h:105

int tc_sha256_update (TCSha256State_t s, const uint8_t *data, size_t datalen);

Implemented in sha256.c:65

Arguments

Argument

Description

s

Sha256 state struct

data

message to hash

datalen

length of message to hash

Return value

returns TC_CRYPTO_SUCCESS (1) returns TC_CRYPTO_FAIL (0) if: s == NULL, s->iv == NULL, data == NULL

Notes

Assumes s has been initialized by tc_sha256_init @warning The state buffer 'leftover' is left in memory after processing If your application intends to have sensitive data in this buffer, remind to erase it after the data has been processed

References

Code

Location

Referrer

int tc_sha256_update(TCSha256State_t s, const uint8_t *data, size_t datalen)

int tc_sha256_update(TCSha256State_t s, const uint8_t *data, size_t datalen)

int tc_sha256_update (TCSha256State_t s, const uint8_t *data, size_t datalen);

int tc_sha256_update (TCSha256State_t s, const uint8_t *data, size_t datalen);

(void)tc_sha256_update(&dummy_state.hash_state,

tc_hmac_set_key()

(void)tc_sha256_update(&ctx->hash_state, key, key_size);

tc_hmac_set_key()

(void) tc_sha256_update(&ctx->hash_state, ctx->key, TC_SHA256_BLOCK_SIZE);

(void)tc_sha256_update(&ctx->hash_state, data, data_length);

tc_hmac_update()

(void)tc_sha256_update(&ctx->hash_state,

tc_hmac_final()

(void)tc_sha256_update(&ctx->hash_state, tag, TC_SHA256_DIGEST_SIZE);

tc_hmac_final()

(void)tc_sha256_update(&dummy_state.hash_state,

tc_hmac_set_key()

(void)tc_sha256_update(&ctx->hash_state, key, key_size);

tc_hmac_set_key()

(void) tc_sha256_update(&ctx->hash_state, ctx->key, TC_SHA256_BLOCK_SIZE);

(void)tc_sha256_update(&ctx->hash_state, data, data_length);

tc_hmac_update()

(void)tc_sha256_update(&ctx->hash_state,

tc_hmac_final()

(void)tc_sha256_update(&ctx->hash_state, tag, TC_SHA256_DIGEST_SIZE);

tc_hmac_final()

Call Tree

tc_sha256_update() is called by 4 functions and calls 2 functions:

tc_hmac_set_key()

tc_hmac_update()

tc_hmac_final()

tc_sha256_update()

Data Use

tc_sha256_update() reads 4 variables and writes 2 variables:

tc_sha256_state_struct::iv

tc_sha256_state_struct::bits_hashed

tc_sha256_state_struct::leftover

tc_sha256_state_struct::leftover_offset

tc_sha256_update()

tc_sha256_state_struct::bits_hashed

tc_sha256_state_struct::leftover_offset

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