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Added VersionTLS constants and VersionName(version uint16) method #4718

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Jan 30, 2025
Merged

Added VersionTLS constants and VersionName(version uint16) method #4718

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31 changes: 31 additions & 0 deletions src/crypto/tls/common.go
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,37 @@ import (
"time"
)

const (
VersionTLS10 = 0x0301
VersionTLS11 = 0x0302
VersionTLS12 = 0x0303
VersionTLS13 = 0x0304

// Deprecated: SSLv3 is cryptographically broken, and is no longer
// supported by this package. See golang.org/issue/32716.
VersionSSL30 = 0x0300
)

// VersionName returns the name for the provided TLS version number
// (e.g. "TLS 1.3"), or a fallback representation of the value if the
// version is not implemented by this package.
func VersionName(version uint16) string {
switch version {
case VersionSSL30:
return "SSLv3"
case VersionTLS10:
return "TLS 1.0"
case VersionTLS11:
return "TLS 1.1"
case VersionTLS12:
return "TLS 1.2"
case VersionTLS13:
return "TLS 1.3"
default:
return fmt.Sprintf("0x%04X", version)
}
}

// CurveID is the type of a TLS identifier for an elliptic curve. See
// https://www.iana.org/assignments/tls-parameters/tls-parameters.xml#tls-parameters-8.
//
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