参考:ruby on rails - SHA1 Encryption? - Stack Overflow
Digest::SHA1.hexdigest( "test" )
# => "a94a8fe5ccb19ba61c4c0873d391e987982fbbd3"
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参考:ruby on rails - SHA1 Encryption? - Stack Overflow
Digest::SHA1.hexdigest( "test" )
# => "a94a8fe5ccb19ba61c4c0873d391e987982fbbd3"
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