31 lines
971 B
Go
31 lines
971 B
Go
// ## SHA1 Hashes
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package main
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// Package `crypto/sha1` computes SHA1 hashes.
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import "crypto/sha1"
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import "encoding/hex"
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import "fmt"
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func main() {
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// The pattern is `sha1.New()`, `sha1.Write(bytes)`,
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// then `sha1.Sum([]byte{})
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h := sha1.New()
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// `Write` expects bytes. If you have a string `s`
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// use `[]byte(s)` to coerce it.
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h.Write([]byte("sha1 this string"))
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// Get the result. The argument to `Sum` can be used
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// to append to an existing buffer: usually uneeded.
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bs := h.Sum(nil)
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// SHA1 values are often printed in hex, for example
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// with git.
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fmt.Println(hex.EncodeToString(bs))
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}
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// You can compute other hashes using a similar
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// pattern. For exmpale, to compute MD5 hashes
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// import `crypto/md5` and use `md5.New()`.
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