mirror of https://github.com/vbatts/imgsrv.git
39 lines
718 B
Go
39 lines
718 B
Go
package main
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import (
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"math/rand"
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"crypto/md5"
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"fmt"
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"hash/adler32"
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"io"
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"time"
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)
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func Rand64() int64 {
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return rand.Int63()
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}
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/* Convinience method for getting md5 sum of a string */
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func GetMd5FromString(blob string) (sum []byte) {
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h := md5.New()
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defer h.Reset()
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io.WriteString(h,blob)
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return h.Sum(nil)
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}
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/* Convinience method for getting md5 sum of some bytes */
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func GetMd5FromBytes(blob []byte) (sum []byte) {
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h := md5.New()
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defer h.Reset()
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h.Write(blob)
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return h.Sum(nil)
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}
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/* get a small, decently unique hash */
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func GetSmallHash() (small_hash string) {
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h := adler32.New()
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io.WriteString(h, fmt.Sprintf("%d", time.Now().Unix()))
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return fmt.Sprintf("%X", h.Sum(nil))
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}
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