The Elliptic Curve Digital Signature Algorithm (ECDSA)

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Public-Key Cryptography Standard (PKCS)

Public-Key Cryptography Standard (PKCS) , RSA Cryptography Standard, specifies mechanisms for encrypting and signing information using the RSA algorithm.The RSA (Rivest Shamir Adleman) algorithm was in public described in 1977 by Ron Rivest, Adi Shamir, and Leonard Adleman at Massachusetts Institute of Technology (MIT) the letters RSA are the initials of their surnames, listed in the same order as on the paper

PKCS (Public-Key Cryptography Standard) v2.1 stipulates two digital signature processes and corresponding formats:

1. RSASSA-PKCS1-v1.5 and
2. RSASSA-PSS.

Both signature schemes are authorized for utilize, but extra constraints are enforced beyond those specified in PKCS (Public-Key Cryptography Standard) v2.1.

1. Implementations that generate RSA key pairs shall use the RSA criteria and the method in B.3.2 to generate those key pairs,
2. Only authorized hash functions shall be used.
3. Only two prime factors p and q shall be utilized to form the modulus n.
4. Random numbers shall be generated.
5. For RSASSA-PSS (Encryption Standard), the length of the salt (sLen) shall be: 0 ? sLen ? the length of the hash function output block.

Public-Key Cryptography Standard was at first formulated by RSA (encryption and network security company) Laboratories in 1991 in cooperation with secure systems developers worldwide, and has been amended as multiple versions. At the time of the approval of Federal Information Processing Standard 186-3 , three versions of Public-Key Cryptography Standard were available: version 1.5, version 2.0 and version 2.1.

The Elliptic Curve Digital Signature Algorithm (ECDSA)

The Elliptic Curve Digital Signature Algorithm (ECDSA)

ANS X9.62, Public Key Cryptography for the Financial Services Industry: The Elliptic Curve Digital Signature Standard (ECDSA), was developed for the American National Standards Institute by the Accredited Standards Committee on Financial Services, X9.

Information about obtaining copies of ANS X9.62 are obtainable at American National Standards Institute by the Accredited Standards Committee on Financial Services site: http://www.x9.org. The discussions are based on the version of ANS X9.62 that was approved in 2005. When available, the most actual version of ANS X9.62 shall be utilized, subject to the transition period discussed in the implementation schedule of this Standard.

ANS X9.62 specifies methods for digital signature generation and verification utilizing the Elliptic Curve Digital Signature Algorithm (ECDSA). Specs for the generation of the domain parameters utilized during the generation and verification of digital signatures are as well included in ANS X9.62.

Elliptic Curve Digital Signature Algorithm (ECDSA) is the elliptic curve analog of DSA. Elliptic Curve Digital Signature Algorithm (ECDSA) keys shall not be utilized for any other purpose (e.g., key establishment).



10 Responses to “The Elliptic Curve Digital Signature Algorithm (ECDSA)”

1. Alex says:

   I can’t install a voip software because I was rejected by a digital signature policy ?
2. admin says:

   This means that the software has not been authorised to be used on your Operating System , or the signature for it has ran out.
3. Paul says:

   How is a digital signature transmitted ?
4. admin says:

   Typically, a digital signature is attached to its message and stored or transmitted with its message.

   However, it may also be sent or stored as a separate data element, so long as it maintains a reliable association with its message.
5. Phil says:

   Windows is blocking me executing a software because it “has no digital signature”. How can I allow the execution of the software ?
6. admin says:

   In Windows digital signatures are there only to prevent unstable or unrecognizable by the system drivers or software to run. You can allow it by going into your device manager properties.
7. Archie says:

   What is a digital signature ?
8. admin says:

   A digital signature is like your normal signature on paper but is electronic (not to be confused with a digital certificate) that can be used to authenticate the identity of the sender of a message or the signer of a document.
9. Cohen says:

   How can I create a digital signatures with php ?
10. admin says:

    If you want to use an RSA signature, you’ll need to use the mcrypt functions.
11. Ken says:

    interesting post
12. P. Silva says:

    a very good article about The Elliptic Curve Digital Signature Algorithm (ECDSA)