47 	struct crypto_cipher *ctx;  in crypto_cipher_init()  local
49 	ctx = os_zalloc(sizeof(*ctx));  in crypto_cipher_init()
50 	if (ctx == NULL)  in crypto_cipher_init()
53 	ctx->alg = alg;  in crypto_cipher_init()
57 		if (key_len > sizeof(ctx->u.rc4.key)) {  in crypto_cipher_init()
58 			os_free(ctx);  in crypto_cipher_init()
61 		ctx->u.rc4.keylen = key_len;  in crypto_cipher_init()
62 		os_memcpy(ctx->u.rc4.key, key, key_len);  in crypto_cipher_init()
65 		ctx->u.aes.ctx_enc = aes_encrypt_init(key, key_len);  in crypto_cipher_init()
66 		if (ctx->u.aes.ctx_enc == NULL) {  in crypto_cipher_init()
67 			os_free(ctx);  in crypto_cipher_init()
70 		ctx->u.aes.ctx_dec = aes_decrypt_init(key, key_len);  in crypto_cipher_init()
71 		if (ctx->u.aes.ctx_dec == NULL) {  in crypto_cipher_init()
72 			aes_encrypt_deinit(ctx->u.aes.ctx_enc);  in crypto_cipher_init()
73 			os_free(ctx);  in crypto_cipher_init()
76 		os_memcpy(ctx->u.aes.cbc, iv, AES_BLOCK_SIZE);  in crypto_cipher_init()
80 			os_free(ctx);  in crypto_cipher_init()
83 		des3_key_setup(key, &ctx->u.des3.key);  in crypto_cipher_init()
84 		os_memcpy(ctx->u.des3.cbc, iv, 8);  in crypto_cipher_init()
88 			os_free(ctx);  in crypto_cipher_init()
91 		des_key_setup(key, ctx->u.des.ek, ctx->u.des.dk);  in crypto_cipher_init()
92 		os_memcpy(ctx->u.des.cbc, iv, 8);  in crypto_cipher_init()
95 		os_free(ctx);  in crypto_cipher_init()
99 	return ctx;  in crypto_cipher_init()
103 int crypto_cipher_encrypt(struct crypto_cipher *ctx, const u8 *plain,  in crypto_cipher_encrypt()  argument
108 	switch (ctx->alg) {  in crypto_cipher_encrypt()
112 		rc4_skip(ctx->u.rc4.key, ctx->u.rc4.keylen,  in crypto_cipher_encrypt()
113 			 ctx->u.rc4.used_bytes, crypt, len);  in crypto_cipher_encrypt()
114 		ctx->u.rc4.used_bytes += len;  in crypto_cipher_encrypt()
122 				ctx->u.aes.cbc[j] ^= plain[j];  in crypto_cipher_encrypt()
123 			aes_encrypt(ctx->u.aes.ctx_enc, ctx->u.aes.cbc,  in crypto_cipher_encrypt()
124 				    ctx->u.aes.cbc);  in crypto_cipher_encrypt()
125 			os_memcpy(crypt, ctx->u.aes.cbc, AES_BLOCK_SIZE);  in crypto_cipher_encrypt()
136 				ctx->u.des3.cbc[j] ^= plain[j];  in crypto_cipher_encrypt()
137 			des3_encrypt(ctx->u.des3.cbc, &ctx->u.des3.key,  in crypto_cipher_encrypt()
138 				     ctx->u.des3.cbc);  in crypto_cipher_encrypt()
139 			os_memcpy(crypt, ctx->u.des3.cbc, 8);  in crypto_cipher_encrypt()
150 				ctx->u.des3.cbc[j] ^= plain[j];  in crypto_cipher_encrypt()
151 			des_block_encrypt(ctx->u.des.cbc, ctx->u.des.ek,  in crypto_cipher_encrypt()
152 					  ctx->u.des.cbc);  in crypto_cipher_encrypt()
153 			os_memcpy(crypt, ctx->u.des.cbc, 8);  in crypto_cipher_encrypt()
166 int crypto_cipher_decrypt(struct crypto_cipher *ctx, const u8 *crypt,  in crypto_cipher_decrypt()  argument
172 	switch (ctx->alg) {  in crypto_cipher_decrypt()
176 		rc4_skip(ctx->u.rc4.key, ctx->u.rc4.keylen,  in crypto_cipher_decrypt()
177 			 ctx->u.rc4.used_bytes, plain, len);  in crypto_cipher_decrypt()
178 		ctx->u.rc4.used_bytes += len;  in crypto_cipher_decrypt()
186 			aes_decrypt(ctx->u.aes.ctx_dec, crypt, plain);  in crypto_cipher_decrypt()
188 				plain[j] ^= ctx->u.aes.cbc[j];  in crypto_cipher_decrypt()
189 			os_memcpy(ctx->u.aes.cbc, tmp, AES_BLOCK_SIZE);  in crypto_cipher_decrypt()
200 			des3_decrypt(crypt, &ctx->u.des3.key, plain);  in crypto_cipher_decrypt()
202 				plain[j] ^= ctx->u.des3.cbc[j];  in crypto_cipher_decrypt()
203 			os_memcpy(ctx->u.des3.cbc, tmp, 8);  in crypto_cipher_decrypt()
214 			des_block_decrypt(crypt, ctx->u.des.dk, plain);  in crypto_cipher_decrypt()
216 				plain[j] ^= ctx->u.des.cbc[j];  in crypto_cipher_decrypt()
217 			os_memcpy(ctx->u.des.cbc, tmp, 8);  in crypto_cipher_decrypt()
230 void crypto_cipher_deinit(struct crypto_cipher *ctx)  in crypto_cipher_deinit()  argument
232 	switch (ctx->alg) {  in crypto_cipher_deinit()
234 		aes_encrypt_deinit(ctx->u.aes.ctx_enc);  in crypto_cipher_deinit()
235 		aes_decrypt_deinit(ctx->u.aes.ctx_dec);  in crypto_cipher_deinit()
242 	os_free(ctx);  in crypto_cipher_deinit()