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SourceVuESP-IDF Framework and ExamplesmbedTLSesp_sha_try_lock_engine()

esp_sha_try_lock_engine() function

Try and obtain exclusive access to a particular SHA engine

Syntax

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Summary

Declaration

Definition

from sha_parallel_engine.h:146

bool esp_sha_try_lock_engine(esp_sha_type sha_type);

Implemented in sha.c:131

Arguments

Argument

Description

sha_type

Type of SHA engine to use.

Return value

Returns true if the SHA engine is locked for exclusive use. Call esp_sha_unlock_sha_engine() when done. Returns false if the SHA engine is already in use, caller should use software SHA algorithm for this digest.

References

Code

Location

Referrer

bool esp_sha_try_lock_engine(esp_sha_type sha_type)

sha.c:131

bool esp_sha_try_lock_engine(esp_sha_type sha_type);

sha_parallel_engine.h:146

if (esp_sha_try_lock_engine(SHA1)) {

esp_sha1.c:287

esp_internal_sha1_parallel_engine_process()

if (!ctx->is224 && esp_sha_try_lock_engine(SHA2_256)) {

esp_sha256.c:246

esp_internal_sha256_parallel_engine_process()

if (esp_sha_try_lock_engine(sha_type(ctx))) {

esp_sha512.c:282

esp_internal_sha512_parallel_engine_process()

Call Tree

esp_sha_try_lock_engine() is called by 3 functions and calls 1 function:

esp_internal_sha1_parallel_engine_process()

esp_internal_sha256_parallel_engine_process()

esp_internal_sha512_parallel_engine_process()

esp_sha_try_lock_engine()

esp_sha_lock_engine_common()

Data Use

esp_sha_try_lock_engine():

esp_sha_try_lock_engine()

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