RSA (Rivest–Shamir–Adleman) is one of the first public-key cryptosystems and is widely used for secure data transmission. The acronym RSA is the initial letters of the surnames of Ron Rivest, Adi Shamir, and Leonard Adleman, who publicly described the algorithm in 1977.In such a cryptosystem, the encryption key is public and distinct from the decryption key which is kept secret (private).

RSA (Rivest–Shamir–Adleman) is one of the first public-key cryptosystems and is widely used for secure data transmission. The acronym RSA is the initial letters of the surnames of Ron Rivest, Adi Shamir, and Leonard Adleman, who publicly described the algorithm in 1977. RSA is widely used in electronic commerce protocols, and is believed to be secure given sufficiently long keys and the use of up-to-date implementations. The most notable difference is that SHA is an encryption algorithm whereas RSA is both an encryption as well as signing algorithm. RSA Overview. RSA is a public-key cryptosystem for both encryption and authentication; it was invented in 1977 by Ron Rivest, Adi Shamir, and Leonard Adleman [RSA78]. Details on the algorithm can be found in various places. RSA is combined with the SHA1 hashing function to sign a message in this signature suite. SHA-2: A family of two similar hash functions, with different block sizes, known as SHA-256 and SHA-512. They differ in the word size; SHA-256 uses 32-byte words where SHA-512 uses 64-byte words. There are also truncated versions of each standard, known as SHA-224, SHA-384, SHA-512/224 and SHA-512/256. These were also designed by the NSA.

RSA (cryptosystem) - Wikipedia

c# - How can I sign a file using RSA and SHA256 with .NET RSA + SHA256 can and will work Your later example may not work all the time, it should use the hash algorithm's OID, rather than it's name. As per your first example, this is obtained from a call to CryptoConfig.MapNameToOID(AlgorithmName) where AlgorithmName is what you are providing (i.e. "SHA256").. First you are going to need is the certificate with the private key.

SHA-3 does not share the same mathematical properties as SHA-1 and SHA-2, and thus should be resistant to cryptographic attack longer than SHA-2. Related: Encryption

sha 1 - Is using RSA with SHA-1 considered as secure as I know SHA-1 hashing is regarded insecure. HMAC-SHA-1 is still regarded secure as this is an encryption process with symmetric key of the hash produced by SHA-1. So signing using RSA with a key size of 2048 with a SHA-1 hash over the content should be regarded secure just like HMAC-SHA-1, correct? SSL Cipher Suites - IBM