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nrf_security: Add CCM* support to CRACEN #30789

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nrf_security: Add CCM* support to CRACEN #30789

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a040113
nrf_security: cracen_sw_aes: fix small input buffer issue
sigvartmh Aug 18, 2026
515536a
nrf_security: psa_crypto: Add CCM_STAR_NO_TAG config
sigvartmh Aug 19, 2026
57159ab
nrf_security: sxsymcrypt: Allow zero-length CCM tag for CCM*
sigvartmh Aug 19, 2026
28ff387
nrf_security: cracen: Implement CCM* no-tag cipher
sigvartmh Aug 19, 2026
c18cebb
tests: tfm_psa_test: Enable CCM_STAR_NO_TAG
sigvartmh Aug 19, 2026
69947b3
doc: crypto: Mark CCM* no tag as supported by CRACEN
sigvartmh Aug 19, 2026
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10 changes: 10 additions & 0 deletions subsys/nrf_security/src/drivers/cracen/cracen_sw/src/cracen_sw_aes_ccm.c
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Original file line number Diff line number Diff line change
Expand Up @@ -392,6 +392,10 @@ psa_status_t cracen_sw_aes_ccm_update(cracen_aead_operation_t *operation, const
size_t processed = 0;
size_t counter_size = CCM_Q_LEN_FROM_NONCE(operation->nonce_length);

if (output_size < input_length) {
return PSA_ERROR_BUFFER_TOO_SMALL;
}
Comment on lines +395 to +397

@AntonZma AntonZma Aug 20, 2026

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Please consider moving this check to cracen_aead_update() instead.

@sigvartmh sigvartmh Aug 20, 2026

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oki


operation->ad_finished = true;
status = initialize_cbc_mac(operation, &cipher);
if (status != PSA_SUCCESS) {
Expand Down Expand Up @@ -459,6 +463,12 @@ psa_status_t cracen_sw_aes_ccm_finish(cracen_aead_operation_t *operation, uint8_
struct sxblkcipher cipher;
psa_status_t status;

*ciphertext_length = 0;

if (tag_size < operation->tag_size) {
return PSA_ERROR_BUFFER_TOO_SMALL;
}
Comment on lines +468 to +470

@AntonZma AntonZma Aug 20, 2026

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Hm, it looks like a duplicate to

sdk-nrf/subsys/nrf_security/src/drivers/cracen/cracen_sw/src/cracen_sw_aead.c

Line 223 in 296634f

if (tag_size < operation->tag_size) {

@sigvartmh sigvartmh Aug 20, 2026

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true


status = initialize_cbc_mac(operation, &cipher);
if (status != PSA_SUCCESS) {
return status;
Expand Down