10 SHA1 Message Digest
| (require file/sha1) | package： base |
See openssl/sha1 for a faster implementation.
函数
in : (or/c bytes? input-port?) start : exact-nonnegative-integer? = 0 end : (or/c #f exact-nonnegative-integer?) = #f
Returns a 40-character string that represents the SHA-1 hash (in
hexadecimal notation) of the content from in. The
in, start, and end arguments are treated
the same as sha1-bytes from racket/base.
The sha1 function composes bytes->hex-string with sha1-bytes.
例如：
> (sha1 (open-input-bytes #"abc")) "a9993e364706816aba3e25717850c26c9cd0d89d"
修改于package base的7.0.0.5版本：Allowed a byte string as in and added the start and end arguments.
函数
(sha1-bytes in [start end]) → string?
in : (or/c bytes? input-port?) start : exact-nonnegative-integer? = 0 end : (or/c #f exact-nonnegative-integer?) = #f
The same as sha1-bytes from racket/base,
returns a 20-byte byte string that represents the SHA-1 hash of the
content from in.
例如：
> (sha1-bytes (open-input-bytes #"abc")) #"\251\231>6G\6\201j\272>%qxP\302l\234\320\330\235"
修改于package base的7.0.0.5版本：Allowed a byte string as in and added the start and end arguments.
函数
(bytes->hex-string bstr) → string?
bstr : bytes?
Converts the given byte string to a string representation, where each
byte in bstr is converted to its two-digit hexadecimal
representation in the resulting string.
例如：
> (bytes->hex-string #"turtles") "747572746c6573"
函数
(hex-string->bytes str) → bytes?
str : string?
Converts the given string to a byte string, where each pair of characters in
str is converted to a single byte in the result.
例如：
> (hex-string->bytes "70") #"p"
> (hex-string->bytes "Af") #"\257"