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Summary Syntax Arguments References Call Tree Data Use

SourceVuESP-IDF Framework and ExamplesESP-IDFtc_hmac_final()

tc_hmac_final() function

HMAC final procedure Writes the HMAC tag into the tag buffer

Syntax

Show:

Summary

Declaration

Definition

from hmac.h:133

int tc_hmac_final(uint8_t *tag, unsigned int taglen, TCHmacState_t ctx);

Implemented in hmac.c:125

Arguments

Argument

Description

tag

IN/OUT -- buffer to receive computed HMAC tag

taglen

IN -- size of tag in bytes

ctx

IN/OUT -- the HMAC state for computing tag

Return value

returns TC_CRYPTO_SUCCESS (1) returns TC_CRYPTO_FAIL (0) if: tag == NULL or ctx == NULL or key == NULL or taglen != TC_SHA256_DIGEST_SIZE

Notes

ctx is erased before exiting. This should never be changed/removed. Assumes the tag bufer is at least sizeof(hmac_tag_size(state)) bytes state has been initialized by tc_hmac_init

References

Code

Location

Referrer

int tc_hmac_final(uint8_t *tag, unsigned int taglen, TCHmacState_t ctx)

int tc_hmac_final(uint8_t *tag, unsigned int taglen, TCHmacState_t ctx)

int tc_hmac_final(uint8_t *tag, unsigned int taglen, TCHmacState_t ctx);

int tc_hmac_final(uint8_t *tag, unsigned int taglen, TCHmacState_t ctx);

return tc_hmac_final(tag, taglen, ctx);

bt_mesh_ext_tc_hmac_final()

(void)tc_hmac_final(prng->key, sizeof(prng->key), &prng->h);

(void)tc_hmac_final(prng->v, sizeof(prng->v), &prng->h);

hmac_prng.c:106

(void)tc_hmac_final(prng->key, sizeof(prng->key), &prng->h);

hmac_prng.c:123

(void)tc_hmac_final(prng->v, sizeof(prng->v), &prng->h);

hmac_prng.c:131

(void)tc_hmac_final(prng->v, sizeof(prng->v), &prng->h);

hmac_prng.c:219

tc_hmac_prng_generate()

(void)tc_hmac_final(prng->key, sizeof(prng->key), &prng->h);

(void)tc_hmac_final(prng->v, sizeof(prng->v), &prng->h);

(void)tc_hmac_final(prng->key, sizeof(prng->key), &prng->h);

hmac_prng.c:102

(void)tc_hmac_final(prng->v, sizeof(prng->v), &prng->h);

hmac_prng.c:109

(void)tc_hmac_final(prng->v, sizeof(prng->v), &prng->h);

hmac_prng.c:197

tc_hmac_prng_generate()

Call Tree

tc_hmac_final() is called by 4 functions and calls 4 functions:

tc_hmac_prng_generate()

bt_mesh_ext_tc_hmac_final()

tc_hmac_final()

tc_sha256_init()

tc_sha256_update()

tc_sha256_final()

Data Use

tc_hmac_final() reads 1 variable:

tc_hmac_state_struct::key

tc_hmac_final()

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