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47 lines
989 B
47 lines
989 B
2 weeks ago
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package utils
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import (
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"crypto/rc4"
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"encoding/binary"
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"log"
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"math"
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)
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func RC4Encode(key string, rawBytes []byte) []byte {
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rc4Key := []byte(key)
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// 要加密的源数据
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dest := make([]byte, len(rawBytes))
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cipher1, _ := rc4.NewCipher(rc4Key)
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cipher1.XORKeyStream(dest, rawBytes)
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log.Printf("RC4加密后:%s ", dest)
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return dest
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}
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func RC4Decode(key string, rawBytes []byte) []byte {
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rc4Key := []byte(key)
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// 要解密的源数据
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dest := make([]byte, len(rawBytes))
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cipher, _ := rc4.NewCipher(rc4Key)
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cipher.XORKeyStream(dest, rawBytes)
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log.Printf("RC4解密后:%s ", dest)
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return dest
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}
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func CRC16CCITTEncode(rawBytes []byte) []byte {
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return NewCRC16CCITT().GetWCRCin(rawBytes)
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}
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func LimitStringLength(s string, maxLength int) string {
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if len(s) <= maxLength {
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return s
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}
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return s[:maxLength]
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}
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func Float32ToBytes(float float32) []byte {
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bits := math.Float32bits(float)
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bytes := make([]byte, 4)
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binary.LittleEndian.PutUint32(bytes, bits)
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return bytes
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}
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