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54 lines
2.3 KiB
54 lines
2.3 KiB
6 years ago
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diff --git a/Lib/ssl.py b/Lib/ssl.py
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index 038daa4..5311321 100644
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--- a/Lib/ssl.py
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+++ b/Lib/ssl.py
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@@ -143,38 +143,36 @@ if _ssl.HAS_TLS_UNIQUE:
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else:
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CHANNEL_BINDING_TYPES = []
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+
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# Disable weak or insecure ciphers by default
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# (OpenSSL's default setting is 'DEFAULT:!aNULL:!eNULL')
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# Enable a better set of ciphers by default
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# This list has been explicitly chosen to:
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# * Prefer cipher suites that offer perfect forward secrecy (DHE/ECDHE)
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# * Prefer ECDHE over DHE for better performance
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-# * Prefer any AES-GCM over any AES-CBC for better performance and security
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+# * Prefer AEAD over CBC for better performance and security
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# * Then Use HIGH cipher suites as a fallback
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-# * Then Use 3DES as fallback which is secure but slow
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# * Finally use RC4 as a fallback which is problematic but needed for
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# compatibility some times.
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-# * Disable NULL authentication, NULL encryption, and MD5 MACs for security
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-# reasons
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+# * Disable NULL authentication, NULL encryption, 3DES and MD5 MACs
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+# for security reasons
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_DEFAULT_CIPHERS = (
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'ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+HIGH:'
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- 'DH+HIGH:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+HIGH:RSA+3DES:ECDH+RC4:'
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- 'DH+RC4:RSA+RC4:!aNULL:!eNULL:!MD5'
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+ 'DH+HIGH:RSA+AESGCM:RSA+AES:RSA+HIGH:ECDH+RC4:DH+RC4:RSA+RC4:!aNULL:!eNULL:'
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+ '!MD5:!3DES'
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)
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# Restricted and more secure ciphers for the server side
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# This list has been explicitly chosen to:
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# * Prefer cipher suites that offer perfect forward secrecy (DHE/ECDHE)
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# * Prefer ECDHE over DHE for better performance
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-# * Prefer any AES-GCM over any AES-CBC for better performance and security
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+# * Prefer AEAD over CBC for better performance and security
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# * Then Use HIGH cipher suites as a fallback
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-# * Then Use 3DES as fallback which is secure but slow
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-# * Disable NULL authentication, NULL encryption, MD5 MACs, DSS, and RC4 for
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-# security reasons
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+# * Disable NULL authentication, NULL encryption, MD5 MACs, DSS, RC4, and
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+# 3DES for security reasons
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_RESTRICTED_SERVER_CIPHERS = (
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'ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+HIGH:'
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- 'DH+HIGH:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+HIGH:RSA+3DES:!aNULL:'
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- '!eNULL:!MD5:!DSS:!RC4'
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+ 'DH+HIGH:RSA+AESGCM:RSA+AES:RSA+HIGH:!aNULL:!eNULL:!MD5:!DSS:!RC4:!3DES'
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)
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