mbedtls/library/ccm.c

121  * Encrypt or decrypt a partial block with CTR
132     ret = mbedtls_block_cipher_encrypt(&ctx->block_cipher_ctx, ctx->ctr, tmp_buf);  in mbedtls_ccm_crypt()
135     ret = mbedtls_cipher_update(&ctx->cipher_ctx, ctx->ctr, 16, tmp_buf, &olen);  in mbedtls_ccm_crypt()
153     memset(ctx->ctr, 0, 16);  in mbedtls_ccm_clear_state()
246     memset(ctx->ctr, 0, 16);  in mbedtls_ccm_starts()
247     ctx->ctr[0] = ctx->q - 1;  in mbedtls_ccm_starts()
248     memcpy(ctx->ctr + 1, iv, iv_len);  in mbedtls_ccm_starts()
249     memset(ctx->ctr + 1 + iv_len, 0, ctx->q);  in mbedtls_ccm_starts()
250     ctx->ctr[15] = 1;  in mbedtls_ccm_starts()
456                 if (++(ctx->ctr)[15-i] != 0) {  in mbedtls_ccm_update()
495         ctx->ctr[15-i] = 0;  in mbedtls_ccm_finish()