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ECDHE (Elliptic-curve Diffie-Hellman Ephemeral)
Ephemeral Elliptic-curve Diffie–Hellman[432][433] is a variant of Elliptic-curve Diffie–Hellman[114][115] key exchange that has forward secrecy[127][128][129][130], and does protect past sessions against future compromises. If long-term secret keys or passwords are compromised, encrypted communications and sessions recorded in the past cannot be retrieved and decrypted.
ECDSA
Elliptic Curve Digital Signature Algorithm[266][267][268][269] is the elliptic-curve cryptography[118][119][120][121] based variant of the digital signature[107][108][109][110] names Digital Signature Algorithm[258][259][260][261][262][263] algorithm. It is considered secure [270][271] and gives better performance and smaller key sizes.
NULL
Encryption algorithm is a null encryption[360][361] that cannot provide confidentiality[91][92][93], so connection is available or disclosed to unauthorized individuals, entities, or processes.
Remove the cipher suite from the list of cipher suites supported by your server.
SHA-1
message authentication code[135][136][137][138] is a hashed message authentication code[139][140][141][142][143][144][145] which is considered secure[462], despite the fact that the underlayingcryptographic hash function[94][95][96][97] (Secure Hash Algorithm 1[202][203][204]) is considered insecure[205][206][207][208][209][210][211].
If your application or requirements specifically call for the use of a message authentication code[135][136][137][138] that does not provide authenticated encryption[74] prefer block cipher mode of operation[82][83][84][85][86] (eg: counter with CBC-MAC[32][33][34], Galois/Counter Mode[46][47][48][49] or message authentication code[135][136][137][138] (eg: Poly1305[458][459]) that proved authenticated encryption over the ones which does not provide it. In case of a hashed message authentication code[139][140][141][142][143][144][145] prefer message authentication code[135][136][137][138] based on Secure Hash Algorithm 2[212][213][214] over the ones based on Secure Hash Algorithm 1[202][203][204].
