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Name Key exchange Authentication Encryption MAC PFS
Type Key size Block size Mode Type Size
TLSv1_2
  ECDHE-ECDSA-AES128-GCM-SHA256 ECDH ECDSA AES 128 128 GCM SHA256 256 PFS
  ECDHE-ECDSA-AES256-GCM-SHA384 ECDH ECDSA AES 256 128 GCM SHA384 384 PFS
  ECDHE-ECDSA-CHACHA20-POLY1305 ECDH ECDSA CHACHA20 256 stream AEAD POLY1305 128 PFS