Microsoft® Windows® 2000 Scripting Guide
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Digital signatures (introduced with WSH 5.6) provide a way for you to verify who authored a script, as well as a way to guarantee that a script has not been altered since it was written and signed. This does not necessarily mean that the script is "safe;" after all, virus writers can obtain digital signatures, too. However, digital signatures do provide two measures of protection:
When a script is signed, the digital signature is appended to the end of the file as a set of comments. Adding the signature as commented lines ensures that the script can still be run using previous versions of WSH (these versions will see the additional lines as comments rather than as a digital signature). A signature might look like this:
'' SIG '' Begin signature block '' SIG '' MIIC8AYJKoZIhvcNAQcCoIIC4TCCAt0CAQExDjAMBggq '' SIG '' hkiG9w0CBQUAMGYGCisGAQQBgjcCAQSgWDBWMDIGCisG '' SIG '' AQQBgjcCAR4wJAIBAQQQTvApFpkntU2P5azhDxfrqwIB '' SIG '' AAIBAAIBAAIBAAIBADAgMAwGCCqGSIb3DQIFBQAEEPC2 '' SIG '' QdSn0Xnjl7nT/Xwadl2gggF6MIIBdjCCASCgAwIBAgIQ '' SIG '' NeMgQmXo1o1F8M6hs6TX1jANBgkqhkiG9w0BAQQFADAW '' SIG '' MRQwEgYDVQQDEwtSb290IEFnZW5jeTAeFw0wMDEyMjEy '' SIG '' MzUxMTJaFw0zOTEyMzEyMzU5NTlaMBUxEzARBgNVBAMT '' SIG '' Ck15IENvbXBhbnkwXDANBgkqhkiG9w0BAQEFAANLADBI '' SIG '' AkEAx/bBOOqOzdHk2EfxXloUaGo9PtI/HSJ9LQSXkhF7 '' SIG '' neEf4Qy+oyA7NImnOacI+1HDCOAPeKgGJIvaFcZs0BuM '' SIG '' iQIDAQABo0swSTBHBgNVHQEEQDA+gBAS5AktBh0dTwCN '' SIG '' YSHcFmRjoRgwFjEUMBIGA1UEAxMLUm9vdCBBZ2VuY3mC '' SIG '' EAY3bACqAGSKEc+41KpcNfQwDQYJKoZIhvcNAQEEBQAD '' SIG '' QQA6/fIIDKycSp2DdBT/A3iUSxoiu2BqmEEpVoGKE5yY '' SIG '' CA3MDWuI29RRvgNJ2oQasb8rZiD5dEexGK3rWEQGV6r+ '' SIG '' MYHhMIHeAgEBMCowFjEUMBIGA1UEAxMLUm9vdCBBZ2Vu '' SIG '' Y3kCEDXjIEJl6NaNRfDOobOk19YwDAYIKoZIhvcNAgUF '' SIG '' AKBOMBAGCisGAQQBgjcCAQwxAjAAMBkGCSqGSIb3DQEJ '' SIG '' AzEMBgorBgEEAYI3AgEEMB8GCSqGSIb3DQEJBDESBBCV '' SIG '' t6owbn7YLnkAnCqiDdINMA0GCSqGSIb3DQEBAQUABECe '' SIG '' xmfNlmrIls2kFkyhXOWKicnpOk5iW4twTRNAc4LAkO8M '' SIG '' uk0ZBCBgR5XC8F7slEMfWCG9R7129EUF4vFhZToK '' SIG '' End signature block
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