LDAPWiki: Public Key

Overview#

A Public Key and Private Key are Cryptographic Keys that are Cryptographically (mathematically) linked.Public Key and Private Key together form a Public-Private Key pairPublic Key need not be protected and SHOULD be expected to be available to Everybody.

LDAPWiki specifically addresses RSA Cryptography on this page even though there are other Algorithms which are similar in usage. Public Key is used to:

Encryption of a message which can only be decrypted only by the Private Key
perform Signature Verification of a digital signature which was signed by the Private Key. The two keys are used in Asymmetric Key Cryptography stems from the use of different keys to perform these opposite functions, each the inverse of the other.

Asymmetric Key Cryptography as contrasted Symmetric Key Cryptography which relies on the same key to perform both.

More Information#

There might be more information for this subject on one of the following:

A Low Infrastructure Public Key Mechanism Using SPKM
Asymmetric Key
Asymmetric Key Cryptography
Asymmetric Key Packages
Asymmetric cipher
AuthorityKeyIdentifier
Binding
Bitcoin address
Blockchain Identity
Blockstack
CA Constraint
CAPK
CRLSign
Certificate
Certificate Authority
Certificate Chain
Certificate Extensions
Certificate Formats
Certificate Pinning
Certificate Request Message Format
Certificate Signature
Certificate Signing Request
Certificate Subject
Certificate Validation
Certificate-based Authentication
CertificateVerify
Cipher
Cipher Suite
Client To Authenticator Protocol
ClientKeyExchange
Consent Receipts
ContentCommitment
Cryptographic Key
DID Authentication
DID Document
DID descriptor objects
DNSCurve
DataEncipherment
DecipherOnly
Diffie-Hellman
Diffie-Hellman Ephemeral
Diffie-Hellman key-exchange
Diffie-Hellman or RSA
Digital Signature
Digital Signature Algorithm
DomainKeys Identified Mail
EMV Terms
Elliptic Curve
Elliptic Curve Diffie-Hellman
EncipherOnly
Ephemeral Key
FAL 2
FIDO
FIDO Authenticator
FIDO Client
FIDO Server
FIDO Standards
FIPS 186
Federation Models
Flat Cleaner
Hash Function
How SSL-TLS Works
Hybrid cryptosystem
Hyperledger Indy
ID Key
Identity Certificate
JLINC
JSON Web Token Claims
JWK
JWK Set
Java KeyStore
Kerberos
Key Generation
Key Transparency
Key Verification
Key pair
Key wrapping
Key-Exchange
KeyAgreement
KeyCertSign
KeyEncipherment
LOA 4
Login_hint_token
Menezes-Qu-Vanstone
NCP Primary Authentication Protocol
NDS Authentication
Netlogon service
NonRepudiation
OAuth 2.0 Demonstration of Proof-of-Possession at the Application Layer
OAuth 2.0 JWT Secured Authorization Request
Offline Data Authentication
Online Certificate Status Protocol
Open-Loop Authentication
Openid-configuration
PKCS 1
PKCS10
PKCS12
Password-authenticated Key Exchange
Pay To Script Hash
Pre-Shared Key Ciphersuites for Transport Layer Security (TLS)
Primary Refresh Token
Privacy-Enhanced Mail
Private Key
Privilege Management Infrastructure
Public Key Algorithm
Public Key Credential
Public Key Cryptography
Public Key Infrastructure Weaknesses
Public Key Pinning Extension for HTTP
Public-Key Cryptography Standards
RS256
RSA
RSA Cryptography
RSA Public Key
RSA key-exchange
RSASSA-PSS
SAML Holder of Key
SASService
SDA
SSL Handshake Failed
Schannel SSP
Self-signed Certificate
ServerCertificate
Shared Secret
Signature Verification
SignatureValue
Sub_jwk
Subject Alternative Name
Subject Public Key Info
SubjectKeyIdentifier
TLS 1.3
TLS Full Handshake
TLSA
The Simple Public-Key GSS-API Mechanism
Time synchronization
Token Binding Protocol
Trust Anchor
U-Prove
Using the Secure Remote Password (SRP) Protocol for TLS Authentication
Verifying Certificate Signatures
W3C Decentralized Identifiers
Web of Trust
WebAuthN
WebAuthn Authenticator
WebAuthn Registration
Why OpenID Connect
X.509
Yubico