2023-10-24 21:24:55 CST W43D2

avutil_hmac.go

@@ -0,0 +1,54 @@
+package ffmpeg
+
+/*
+#include <libavutil/hmac.h>
+*/
+import "C"
+
+// AVHMACType
+type AVHMACType C.enum_AVHMACType
+
+const (
+	AV_HMAC_MD5    = AVHMACType(C.AV_HMAC_MD5)
+	AV_HMAC_SHA1   = AVHMACType(C.AV_HMAC_SHA1)
+	AV_HMAC_SHA224 = AVHMACType(C.AV_HMAC_SHA224)
+	AV_HMAC_SHA256 = AVHMACType(C.AV_HMAC_SHA256)
+	AV_HMAC_SHA384 = AVHMACType(C.AV_HMAC_SHA384)
+	AV_HMAC_SHA512 = AVHMACType(C.AV_HMAC_SHA512)
+)
+
+type AVHMAC C.struct_AVHMAC
+
+// AvHmacAlloc allocates an AVHMAC context.
+func AvHmacAlloc(_type AVHMACType) *AVHMAC {
+	return (*AVHMAC)(C.av_hmac_alloc((C.enum_AVHMACType)(_type)))
+}
+
+// AvHmacFree frees an AVHMAC context.
+func AvHmacFree(ctx *AVHMAC) {
+	C.av_hmac_free((*C.struct_AVHMAC)(ctx))
+}
+
+// AvHmacInit initializes an AVHMAC context with an authentication key.
+func AvHmacInit(ctx *AVHMAC, key *uint8, keylen uint32) {
+	C.av_hmac_init((*C.struct_AVHMAC)(ctx), (*C.uint8_t)(key), (C.uint)(keylen))
+}
+
+// AvHmacUpdate hashes data with the HMAC.
+func AvHmacUpdate(ctx *AVHMAC, data *uint8, len uint32) {
+	C.av_hmac_update((*C.struct_AVHMAC)(ctx), (*C.uint8_t)(data), (C.uint)(len))
+}
+
+// AvHmacFinal finishes hashing and output the HMAC digest.
+func AvHmacFinal(ctx *AVHMAC, out *uint8, outlen uint32) int32 {
+	return (int32)(C.av_hmac_final((*C.struct_AVHMAC)(ctx), (*C.uint8_t)(out), (C.uint)(outlen)))
+}
+
+// AvHmacCalc hashes an array of data with a key.
+func AvHmacCalc(ctx *AVHMAC, data *uint8, len uint32,
+	key *uint8, keylen uint32,
+	out *uint8, outlen uint32) int32 {
+	return (int32)(C.av_hmac_calc((*C.struct_AVHMAC)(ctx), (*C.uint8_t)(data), (C.uint)(len),
+		(*C.uint8_t)(key), (C.uint)(keylen),
+		(*C.uint8_t)(out), (C.uint)(outlen)))
+}