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Diffstat (limited to 'srtp/crypto/include/aes_icm.h')
-rw-r--r--srtp/crypto/include/aes_icm.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/srtp/crypto/include/aes_icm.h b/srtp/crypto/include/aes_icm.h
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+++ b/srtp/crypto/include/aes_icm.h
@@ -0,0 +1,56 @@
+/*
+ * aes_icm.h
+ *
+ * Header for AES Integer Counter Mode.
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ *
+ */
+
+#ifndef AES_ICM_H
+#define AES_ICM_H
+
+#include "aes.h"
+#include "cipher.h"
+
+typedef struct {
+ v128_t counter; /* holds the counter value */
+ v128_t offset; /* initial offset value */
+ v128_t keystream_buffer; /* buffers bytes of keystream */
+ aes_expanded_key_t expanded_key; /* the cipher key */
+ int bytes_in_buffer; /* number of unused bytes in buffer */
+} aes_icm_ctx_t;
+
+
+err_status_t
+aes_icm_context_init(aes_icm_ctx_t *c,
+ const unsigned char *key);
+
+err_status_t
+aes_icm_set_iv(aes_icm_ctx_t *c, void *iv);
+
+err_status_t
+aes_icm_encrypt(aes_icm_ctx_t *c,
+ unsigned char *buf, unsigned int *bytes_to_encr);
+
+err_status_t
+aes_icm_output(aes_icm_ctx_t *c,
+ unsigned char *buf, int bytes_to_output);
+
+err_status_t
+aes_icm_dealloc(cipher_t *c);
+
+err_status_t
+aes_icm_encrypt_ismacryp(aes_icm_ctx_t *c,
+ unsigned char *buf,
+ unsigned int *enc_len,
+ int forIsmacryp);
+
+err_status_t
+aes_icm_alloc_ismacryp(cipher_t **c,
+ int key_len,
+ int forIsmacryp);
+
+#endif /* AES_ICM_H */
+