Ecdsa

In cryptography, the Elliptic Curve Digital Signature Algorithm offers a variant of the Digital Signature Algorithm which uses elliptic curve cryptography.

Rsa

RSA is a common public key algorithm, which can be used for encryption and signature



Lowest nist bigger

Example

"Rsa is using bigger keys than ecdsa and thus it is recommended for inclusion only for its backwards compatibility properties and only for usage where legacy constraints or government regulation forbids the usage of more modern approaches"

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Different key generation algorithms used in different blockchains

"So the lowest commonly supported ecdsa keysize keys based on nist p-256 secp256r1 gets 128 bits of security which nist rates as good for 2031+;rsa is also a better choice than dsa because it has much better breadth of support for signatures still considered secure by nist"

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Get SHA1 sign of string with DSA private key from PEM file

Others

Example

For rsa as implemented in the modern era since about 1980 signing is much slower than verifying;for dsa and ecdsa verifying is slightly slower than signing

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What exactly does signer.verify(signerInformationVerifier) verify?

It s slower than rsa and ecdsa it has more perfect or broken states than rsa and its key generation is several orders of magnitude slower than rsa and ecdsa

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What is wrong with the DSACryptoServiceProvider?

If you re interesting in reducing the size of the resulting cookies you should consider using ecdsa rather than rsa to produce the signatures - ecdsa signatures are considerably smaller than rsa signatures of an equivalent security factor

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Can one encrypt with a private key/decrypt with a public key?

One reason for that is because ecdsa signatures are much smaller than rsa signatures twice the ecc key size which would be about 64 bytes for a very secure 256 bit curve

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Why can't I use RSA OAEP padding when encrypting with a private key?

Ecdsa is much faster than rsa for private key operations so it should definitely be preferred over rsa when high efficiency is required unless rsa is still fast enough something that may very well be the case

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Java REST-Service with Digital Signing

Key pair using rsa or ecdsa is more preferable as a security point of view

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For user verification, you do need to store data on server side even when using JWT correct?

Rsa is much faster then ecdsa at verification

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Understanding RSA signing for JWT

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