Class List
Here are the classes, structs, unions and interfaces with brief descriptions:

QCA | QCA - the Qt Cryptographic Architecture
AbstractLogDevice | An abstract log device
Algorithm | General superclass for an algorithm
AuthTag | Container for authentication tag
Base64 | Base64 encoding / decoding
BasicContext | Base class to use for primitive provider contexts
BigInteger | Arbitrary precision integer
BufferedComputation | General superclass for buffered computation algorithms
CAContext | X.509 certificate authority provider
CertBase | X.509 certificate and certificate request provider base
CertCollectionContext | X.509 certificate collection provider
CertContext | X.509 certificate provider
CertContextProps | X.509 certificate or certificate request properties
Certificate | Public Key (X.509) certificate
CertificateAuthority | A Certificate Authority is used to generate Certificates and Certificate Revocation Lists (CRLs)
CertificateChain | A chain of related Certificates
CertificateCollection | Bundle of Certificates and CRLs
CertificateInfoOrdered | Ordered certificate properties type
CertificateInfoPair | One entry in a certificate information list
CertificateInfoType | Certificate information type
CertificateOptions | Certificate options
CertificateRequest | Certificate Request
Cipher | General class for cipher (encryption / decryption) algorithms
CipherContext | Cipher provider
CMS | Cryptographic Message Syntax messaging system
Console | QCA Console system
ConsolePrompt | Console prompt handler
ConsoleReference | Manager for a Console
ConstraintType | Certificate constraint
CRL | Certificate Revocation List
CRLContext | X.509 certificate revocation list provider
CRLContextProps | X.509 certificate revocation list properties
CRLEntry | Part of a CRL representing a single certificate
CSRContext | X.509 certificate request provider
DHContext | Diffie-Hellman provider
DHPrivateKey | Diffie-Hellman Private Key
DHPublicKey | Diffie-Hellman Public Key
DirWatch | Support class to monitor a directory for activity
DLGroup | A discrete logarithm group
DLGroupContext | Discrete logarithm provider
DSAContext | DSA provider
DSAPrivateKey | Digital Signature Algorithm Private Key
DSAPublicKey | Digital Signature Algorithm Public Key
Event | An asynchronous event
EventHandler | Interface class for password / passphrase / PIN and token handlers
FileWatch | Support class to monitor a file for activity
Filter | General superclass for filtering transformation algorithms
Hash | General class for hashing algorithms
HashContext | Hash provider
Hex | Hexadecimal encoding / decoding
HKDF |
HKDFContext | HKDF provider
InfoContext | Extended provider information
InitializationVector | Container for initialisation vectors and nonces
Initializer | Convenience method for initialising and cleaning up QCA
KDFContext | Key derivation function provider
KeyBundle | Certificate chain and private key pair
KeyDerivationFunction | General superclass for key derivation algorithms
KeyGenerator | Class for generating asymmetric key pairs
KeyLength | Simple container for acceptable key lengths
KeyLoader | Asynchronous private key loader
KeyStore | General purpose key storage object
KeyStoreEntry | Single entry in a KeyStore
KeyStoreEntryContext | KeyStoreEntry provider
KeyStoreEntryWatcher | Class to monitor the availability of a KeyStoreEntry
KeyStoreInfo | Key store information, outside of a KeyStore object
KeyStoreListContext | KeyStore provider
KeyStoreManager | Access keystores, and monitor keystores for changes
Logger | A simple logging system
MACContext | Message authentication code provider
MemoryRegion | Array of bytes that may be optionally secured
MessageAuthenticationCode | General class for message authentication code (MAC) algorithms
MessageContext | SecureMessage provider
OpenPGP | Pretty Good Privacy messaging system
PasswordAsker | User password / passphrase / PIN handler
PBKDF1 | Password based key derivation function version 1
PBKDF2 | Password based key derivation function version 2
PGPKey | Pretty Good Privacy key
PGPKeyContext | OpenPGP key provider
PGPKeyContextProps | OpenPGP key properties
PKCS12Context | PKCS#12 provider
PKey | General superclass for public (PublicKey) and private (PrivateKey) keys used with asymmetric encryption techniques
PKeyBase | Public key implementation provider base
PKeyContext | Public key container provider
PrivateKey | Generic private key
Provider | Algorithm provider
Context | Internal context class used for the plugin
PublicKey | Generic public key
QPipe | A FIFO buffer (named pipe) abstraction
QPipeDevice | Unbuffered direct pipe
QPipeEnd | A buffered higher-level pipe end
Random | Source of random numbers
RandomContext | Random provider
RSAContext | RSA provider
RSAPrivateKey | RSA Private Key
RSAPublicKey | RSA Public Key
SafeTimer |
SASL | Simple Authentication and Security Layer protocol implementation
Params | Parameter flags for the SASL authentication
SASLContext | SASL provider
HostPort | Convenience class to hold an IP address and an associated port
SecureArray | Secure array of bytes
SecureLayer | Abstract interface to a security layer
SecureMessage | Class representing a secure message
SecureMessageKey | Key for SecureMessage system
SecureMessageSignature | SecureMessage signature
SecureMessageSystem | Abstract superclass for secure messaging systems
SMSContext | SecureMessageSystem provider
SymmetricKey | Container for keys for symmetric encryption algorithms
Synchronizer | Enable synchronization between two threads
SyncThread | Convenience class to run a thread and interact with it synchronously
TextFilter | Superclass for text based filtering algorithms
TLS | Transport Layer Security / Secure Socket Layer
TLSContext | TLS provider
SessionInfo | Information about an active TLS connection
TLSSession | Session token, used for TLS resuming
TLSSessionContext | TLS "session" provider
TokenAsker | User token handler
QCAPlugin | Provider plugin base class
QList |
QObject |
QThread |