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SourceVuESP-IDF Framework and ExamplesmbedTLSmbedtls_ssl_transform::ivlen

mbedtls_ssl_transform::ivlen field

IV length

Syntax

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Summary

Declaration

from ssl_misc.h:1122

size_t ivlen;

References

Code

Location

Referrer

size_t ivlen; /*!< IV length */

ssl_misc.h:1122

return transform->ivlen != transform->fixed_ivlen;

ssl_transform_aead_dynamic_iv_is_explicit()

iv, transform->ivlen,

mbedtls_ssl_encrypt_buf()

padlen = transform->ivlen - (rec->data_len + 1) % transform->ivlen;

mbedtls_ssl_encrypt_buf()

if (padlen == transform->ivlen) {

mbedtls_ssl_encrypt_buf()

if (rec->data_offset < transform->ivlen) {

mbedtls_ssl_encrypt_buf()

ret = f_rng(p_rng, transform->iv_enc, transform->ivlen);

mbedtls_ssl_encrypt_buf()

memcpy(data - transform->ivlen, transform->iv_enc, transform->ivlen);

mbedtls_ssl_encrypt_buf()

transform->ivlen,

mbedtls_ssl_encrypt_buf()

data -= transform->ivlen;

mbedtls_ssl_encrypt_buf()

rec->data_offset -= transform->ivlen;

mbedtls_ssl_encrypt_buf()

rec->data_len += transform->ivlen;

mbedtls_ssl_encrypt_buf()

iv, transform->ivlen,

mbedtls_ssl_decrypt_buf()

minlen += transform->ivlen;

mbedtls_ssl_decrypt_buf()

if (rec->data_len < minlen + transform->ivlen ||

mbedtls_ssl_decrypt_buf()

if (rec->data_len % transform->ivlen != 0) {

mbedtls_ssl_decrypt_buf()

memcpy(transform->iv_dec, data, transform->ivlen);

mbedtls_ssl_decrypt_buf()

data += transform->ivlen;

mbedtls_ssl_decrypt_buf()

rec->data_offset += transform->ivlen;

mbedtls_ssl_decrypt_buf()

rec->data_len -= transform->ivlen;

mbedtls_ssl_decrypt_buf()

transform->iv_dec, transform->ivlen,

mbedtls_ssl_decrypt_buf()

return transform->ivlen - transform->fixed_ivlen;

ssl_transform_get_explicit_iv_len()

transform->ivlen = 12;

ssl_tls12_populate_transform()

explicit_ivlen = transform->ivlen - transform->fixed_ivlen;

ssl_tls12_populate_transform()

transform->ivlen = mbedtls_cipher_info_get_iv_size(cipher_info);

ssl_tls12_populate_transform()

transform->minlen += transform->ivlen;

ssl_tls12_populate_transform()

transform->fixed_ivlen : transform->ivlen;

ssl_tls12_populate_transform()

transform->fixed_ivlen : transform->ivlen;

ssl_tls12_populate_transform()

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Data Use

mbedtls_ssl_transform::ivlen is written by 1 function and is read by 5 functions:

ssl_tls12_populate_transform()

mbedtls_ssl_transform::ivlen

ssl_transform_aead_dynamic_iv_is_explicit()

mbedtls_ssl_encrypt_buf()

mbedtls_ssl_decrypt_buf()

ssl_transform_get_explicit_iv_len()

ssl_tls12_populate_transform()

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