--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2021 Marvell.
+ */
+
+#include "roc_api.h"
+
+static uint8_t zuc_d[32] = {0x44, 0xD7, 0x26, 0xBC, 0x62, 0x6B, 0x13, 0x5E,
+ 0x57, 0x89, 0x35, 0xE2, 0x71, 0x35, 0x09, 0xAF,
+ 0x4D, 0x78, 0x2F, 0x13, 0x6B, 0xC4, 0x1A, 0xF1,
+ 0x5E, 0x26, 0x3C, 0x4D, 0x78, 0x9A, 0x47, 0xAC};
+
+static inline void
+cpt_snow3g_key_gen(const uint8_t *ck, uint32_t *keyx)
+{
+ int i, base;
+
+ for (i = 0; i < 4; i++) {
+ base = 4 * i;
+ keyx[3 - i] = (ck[base] << 24) | (ck[base + 1] << 16) |
+ (ck[base + 2] << 8) | (ck[base + 3]);
+ keyx[3 - i] = plt_cpu_to_be_32(keyx[3 - i]);
+ }
+}
+
+static inline int
+cpt_ciph_aes_key_validate(uint16_t key_len)
+{
+ switch (key_len) {
+ case 16:
+ case 24:
+ case 32:
+ return 0;
+ default:
+ return -1;
+ }
+}
+
+static inline int
+cpt_ciph_type_set(roc_se_cipher_type type, struct roc_se_ctx *ctx,
+ uint16_t key_len)
+{
+ int fc_type = 0;
+
+ switch (type) {
+ case ROC_SE_PASSTHROUGH:
+ fc_type = ROC_SE_FC_GEN;
+ break;
+ case ROC_SE_DES3_CBC:
+ case ROC_SE_DES3_ECB:
+ fc_type = ROC_SE_FC_GEN;
+ break;
+ case ROC_SE_AES_CBC:
+ case ROC_SE_AES_ECB:
+ case ROC_SE_AES_CFB:
+ case ROC_SE_AES_CTR:
+ case ROC_SE_AES_GCM:
+ if (unlikely(cpt_ciph_aes_key_validate(key_len) != 0))
+ return -1;
+ fc_type = ROC_SE_FC_GEN;
+ break;
+ case ROC_SE_CHACHA20:
+ fc_type = ROC_SE_FC_GEN;
+ break;
+ case ROC_SE_AES_XTS:
+ key_len = key_len / 2;
+ if (unlikely(key_len == 24)) {
+ plt_err("Invalid AES key len for XTS");
+ return -1;
+ }
+ if (unlikely(cpt_ciph_aes_key_validate(key_len) != 0))
+ return -1;
+ fc_type = ROC_SE_FC_GEN;
+ break;
+ case ROC_SE_ZUC_EEA3:
+ case ROC_SE_SNOW3G_UEA2:
+ if (unlikely(key_len != 16))
+ return -1;
+ /* No support for AEAD yet */
+ if (unlikely(ctx->hash_type))
+ return -1;
+ fc_type = ROC_SE_PDCP;
+ break;
+ case ROC_SE_AES_CTR_EEA2:
+ fc_type = ROC_SE_PDCP;
+ break;
+ case ROC_SE_KASUMI_F8_CBC:
+ case ROC_SE_KASUMI_F8_ECB:
+ if (unlikely(key_len != 16))
+ return -1;
+ /* No support for AEAD yet */
+ if (unlikely(ctx->hash_type))
+ return -1;
+ fc_type = ROC_SE_KASUMI;
+ break;
+ default:
+ return -1;
+ }
+
+ ctx->fc_type = fc_type;
+ return 0;
+}
+
+static inline void
+cpt_ciph_aes_key_type_set(struct roc_se_context *fctx, uint16_t key_len)
+{
+ roc_se_aes_type aes_key_type = 0;
+
+ switch (key_len) {
+ case 16:
+ aes_key_type = ROC_SE_AES_128_BIT;
+ break;
+ case 24:
+ aes_key_type = ROC_SE_AES_192_BIT;
+ break;
+ case 32:
+ aes_key_type = ROC_SE_AES_256_BIT;
+ break;
+ default:
+ /* This should not happen */
+ plt_err("Invalid AES key len");
+ return;
+ }
+ fctx->enc.aes_key = aes_key_type;
+}
+
+int
+roc_se_auth_key_set(struct roc_se_ctx *se_ctx, roc_se_auth_type type,
+ const uint8_t *key, uint16_t key_len, uint16_t mac_len)
+{
+ struct roc_se_zuc_snow3g_ctx *zs_ctx;
+ struct roc_se_kasumi_ctx *k_ctx;
+ struct roc_se_context *fctx;
+
+ if (se_ctx == NULL)
+ return -1;
+
+ zs_ctx = &se_ctx->se_ctx.zs_ctx;
+ k_ctx = &se_ctx->se_ctx.k_ctx;
+ fctx = &se_ctx->se_ctx.fctx;
+
+ if ((type >= ROC_SE_ZUC_EIA3) && (type <= ROC_SE_KASUMI_F9_ECB)) {
+ uint32_t keyx[4];
+
+ if (key_len != 16)
+ return -1;
+ /* No support for AEAD yet */
+ if (se_ctx->enc_cipher)
+ return -1;
+ /* For ZUC/SNOW3G/Kasumi */
+ switch (type) {
+ case ROC_SE_SNOW3G_UIA2:
+ se_ctx->pdcp_alg_type = ROC_SE_PDCP_ALG_TYPE_SNOW3G;
+ cpt_snow3g_key_gen(key, keyx);
+ memcpy(zs_ctx->ci_key, keyx, key_len);
+ se_ctx->fc_type = ROC_SE_PDCP;
+ se_ctx->zsk_flags = 0x1;
+ break;
+ case ROC_SE_ZUC_EIA3:
+ se_ctx->pdcp_alg_type = ROC_SE_PDCP_ALG_TYPE_ZUC;
+ memcpy(zs_ctx->ci_key, key, key_len);
+ memcpy(zs_ctx->zuc_const, zuc_d, 32);
+ se_ctx->fc_type = ROC_SE_PDCP;
+ se_ctx->zsk_flags = 0x1;
+ break;
+ case ROC_SE_AES_CMAC_EIA2:
+ se_ctx->pdcp_alg_type = ROC_SE_PDCP_ALG_TYPE_AES_CTR;
+ memcpy(zs_ctx->ci_key, key, key_len);
+ se_ctx->fc_type = ROC_SE_PDCP;
+ se_ctx->zsk_flags = 0x1;
+ break;
+ case ROC_SE_KASUMI_F9_ECB:
+ /* Kasumi ECB mode */
+ se_ctx->k_ecb = 1;
+ memcpy(k_ctx->ci_key, key, key_len);
+ se_ctx->fc_type = ROC_SE_KASUMI;
+ se_ctx->zsk_flags = 0x1;
+ break;
+ case ROC_SE_KASUMI_F9_CBC:
+ memcpy(k_ctx->ci_key, key, key_len);
+ se_ctx->fc_type = ROC_SE_KASUMI;
+ se_ctx->zsk_flags = 0x1;
+ break;
+ default:
+ return -1;
+ }
+ se_ctx->mac_len = 4;
+ se_ctx->hash_type = type;
+ return 0;
+ }
+
+ if (!se_ctx->fc_type ||
+ (type && type != ROC_SE_GMAC_TYPE && !se_ctx->enc_cipher))
+ se_ctx->fc_type = ROC_SE_HASH_HMAC;
+
+ if (se_ctx->fc_type == ROC_SE_FC_GEN && key_len > 64)
+ return -1;
+
+ /* For GMAC auth, cipher must be NULL */
+ if (type == ROC_SE_GMAC_TYPE)
+ fctx->enc.enc_cipher = 0;
+
+ fctx->enc.hash_type = type;
+ se_ctx->hash_type = type;
+ fctx->enc.mac_len = mac_len;
+ se_ctx->mac_len = mac_len;
+
+ if (key_len) {
+ se_ctx->hmac = 1;
+ memset(se_ctx->auth_key, 0, sizeof(se_ctx->auth_key));
+ memcpy(se_ctx->auth_key, key, key_len);
+ se_ctx->auth_key_len = key_len;
+ memset(fctx->hmac.ipad, 0, sizeof(fctx->hmac.ipad));
+ memset(fctx->hmac.opad, 0, sizeof(fctx->hmac.opad));
+
+ if (key_len <= 64)
+ memcpy(fctx->hmac.opad, key, key_len);
+ fctx->enc.auth_input_type = 1;
+ }
+ return 0;
+}
+
+int
+roc_se_ciph_key_set(struct roc_se_ctx *se_ctx, roc_se_cipher_type type,
+ const uint8_t *key, uint16_t key_len, uint8_t *salt)
+{
+ struct roc_se_context *fctx = &se_ctx->se_ctx.fctx;
+ struct roc_se_zuc_snow3g_ctx *zs_ctx;
+ uint32_t keyx[4];
+ int ret;
+
+ /* For AES-GCM, salt is taken from ctx even if IV source
+ * is from DPTR
+ */
+ if ((salt != NULL) && (type == ROC_SE_AES_GCM)) {
+ memcpy(fctx->enc.encr_iv, salt, 4);
+ /* Assuming it was just salt update
+ * and nothing else
+ */
+ if (key == NULL)
+ return 0;
+ }
+
+ ret = cpt_ciph_type_set(type, se_ctx, key_len);
+ if (unlikely(ret))
+ return -1;
+
+ if (se_ctx->fc_type == ROC_SE_FC_GEN) {
+ /*
+ * We need to always say IV is from DPTR as user can
+ * sometimes iverride IV per operation.
+ */
+ fctx->enc.iv_source = ROC_SE_FROM_DPTR;
+
+ if (se_ctx->auth_key_len > 64)
+ return -1;
+ }
+
+ switch (type) {
+ case ROC_SE_PASSTHROUGH:
+ se_ctx->enc_cipher = 0;
+ fctx->enc.enc_cipher = 0;
+ goto success;
+ case ROC_SE_DES3_CBC:
+ /* CPT performs DES using 3DES with the 8B DES-key
+ * replicated 2 more times to match the 24B 3DES-key.
+ * Eg. If org. key is "0x0a 0x0b", then new key is
+ * "0x0a 0x0b 0x0a 0x0b 0x0a 0x0b"
+ */
+ if (key_len == 8) {
+ /* Skipping the first 8B as it will be copied
+ * in the regular code flow
+ */
+ memcpy(fctx->enc.encr_key + key_len, key, key_len);
+ memcpy(fctx->enc.encr_key + 2 * key_len, key, key_len);
+ }
+ break;
+ case ROC_SE_DES3_ECB:
+ /* For DES3_ECB IV need to be from CTX. */
+ fctx->enc.iv_source = ROC_SE_FROM_CTX;
+ break;
+ case ROC_SE_AES_CBC:
+ case ROC_SE_AES_ECB:
+ case ROC_SE_AES_CFB:
+ case ROC_SE_AES_CTR:
+ case ROC_SE_CHACHA20:
+ cpt_ciph_aes_key_type_set(fctx, key_len);
+ break;
+ case ROC_SE_AES_GCM:
+ cpt_ciph_aes_key_type_set(fctx, key_len);
+ break;
+ case ROC_SE_AES_XTS:
+ key_len = key_len / 2;
+ cpt_ciph_aes_key_type_set(fctx, key_len);
+
+ /* Copy key2 for XTS into ipad */
+ memset(fctx->hmac.ipad, 0, sizeof(fctx->hmac.ipad));
+ memcpy(fctx->hmac.ipad, &key[key_len], key_len);
+ break;
+ case ROC_SE_SNOW3G_UEA2:
+ se_ctx->pdcp_alg_type = ROC_SE_PDCP_ALG_TYPE_SNOW3G;
+ cpt_snow3g_key_gen(key, keyx);
+ memcpy(se_ctx->se_ctx.zs_ctx.ci_key, keyx, key_len);
+ se_ctx->zsk_flags = 0;
+ goto success;
+ case ROC_SE_ZUC_EEA3:
+ zs_ctx = &se_ctx->se_ctx.zs_ctx;
+ se_ctx->pdcp_alg_type = ROC_SE_PDCP_ALG_TYPE_ZUC;
+ memcpy(zs_ctx->ci_key, key, key_len);
+ memcpy(zs_ctx->zuc_const, zuc_d, 32);
+ se_ctx->zsk_flags = 0;
+ goto success;
+ case ROC_SE_AES_CTR_EEA2:
+ se_ctx->pdcp_alg_type = ROC_SE_PDCP_ALG_TYPE_AES_CTR;
+ memcpy(se_ctx->se_ctx.zs_ctx.ci_key, key, key_len);
+ se_ctx->zsk_flags = 0;
+ goto success;
+ case ROC_SE_KASUMI_F8_ECB:
+ se_ctx->k_ecb = 1;
+ memcpy(se_ctx->se_ctx.k_ctx.ci_key, key, key_len);
+ se_ctx->zsk_flags = 0;
+ goto success;
+ case ROC_SE_KASUMI_F8_CBC:
+ memcpy(se_ctx->se_ctx.k_ctx.ci_key, key, key_len);
+ se_ctx->zsk_flags = 0;
+ goto success;
+ default:
+ return -1;
+ }
+
+ /* Only for ROC_SE_FC_GEN case */
+
+ /* For GMAC auth, cipher must be NULL */
+ if (se_ctx->hash_type != ROC_SE_GMAC_TYPE)
+ fctx->enc.enc_cipher = type;
+
+ memcpy(fctx->enc.encr_key, key, key_len);
+
+success:
+ se_ctx->enc_cipher = type;
+
+ return 0;
+}
git.droids-corp.org / dpdk.git / commitdiff