GCM

Functions
Error	plusaes::encrypt_gcm (unsigned char *data, const std::size_t data_size, const unsigned char *aadata, const std::size_t aadata_size, const unsigned char *key, const std::size_t key_size, const unsigned char *iv, const std::size_t iv_size, unsigned char *tag, const std::size_t tag_size)
Error	plusaes::encrypt_gcm (unsigned char *data, const std::size_t data_size, const unsigned char *aadata, const std::size_t aadata_size, const unsigned char *key, const std::size_t key_size, const unsigned char(*iv)[12], unsigned char(*tag)[16])
Error	plusaes::decrypt_gcm (unsigned char *data, const std::size_t data_size, const unsigned char *aadata, const std::size_t aadata_size, const unsigned char *key, const std::size_t key_size, const unsigned char *iv, const std::size_t iv_size, const unsigned char *tag, const std::size_t tag_size)
Error	plusaes::decrypt_gcm (unsigned char *data, const std::size_t data_size, const unsigned char *aadata, const std::size_t aadata_size, const unsigned char *key, const std::size_t key_size, const unsigned char(*iv)[12], const unsigned char(*tag)[16])

Detailed Description

GCM mode functions

Function Documentation

decrypt_gcm() [1/2]

Error plusaes::decrypt_gcm ( unsigned char *  data, const std::size_t  data_size, const unsigned char *  aadata, const std::size_t  aadata_size, const unsigned char *  key, const std::size_t  key_size, const unsigned char *  iv, const std::size_t  iv_size, const unsigned char *  tag, const std::size_t  tag_size  )

inline

Decrypts data with GCM mode and checks an authentication tag.

You can specify iv size and tag size. But usually you should use the other overloaded function whose iv and tag size is fixed.

Returns

kErrorOk

kErrorInvalidKeySize

kErrorInvalidIvSize

kErrorInvalidTagSize

kErrorInvalidTag

decrypt_gcm() [2/2]

Error plusaes::decrypt_gcm ( unsigned char *  data, const std::size_t  data_size, const unsigned char *  aadata, const std::size_t  aadata_size, const unsigned char *  key, const std::size_t  key_size, const unsigned char(*)  iv[12], const unsigned char(*)  tag[16]  )

inline

Decrypts data with GCM mode and checks an authentication tag.

Parameters

[in,out]	data	Input data and output buffer. This buffer is replaced with decrypted data.
[in]	data_size	data size
[in]	aadata	Additional Authenticated data
[in]	aadata_size	aadata size
[in]	key	Cipher key
[in]	key_size	Cipher key size. This value must be 16 (128-bit), 24 (192-bit), or 32 (256-bit).
[in]	iv	Initialization vector
[in]	tag	Authentication tag data

Returns

kErrorOk

kErrorInvalidKeySize

kErrorInvalidTag

encrypt_gcm() [1/2]

Error plusaes::encrypt_gcm ( unsigned char *  data, const std::size_t  data_size, const unsigned char *  aadata, const std::size_t  aadata_size, const unsigned char *  key, const std::size_t  key_size, const unsigned char *  iv, const std::size_t  iv_size, unsigned char *  tag, const std::size_t  tag_size  )

inline

Encrypts data with GCM mode and gets an authentication tag.

You can specify iv size and tag size. But usually you should use the other overloaded function whose iv and tag size is fixed.

Returns

kErrorOk

kErrorInvalidKeySize

kErrorInvalidIvSize

kErrorInvalidTagSize

encrypt_gcm() [2/2]

Error plusaes::encrypt_gcm ( unsigned char *  data, const std::size_t  data_size, const unsigned char *  aadata, const std::size_t  aadata_size, const unsigned char *  key, const std::size_t  key_size, const unsigned char(*)  iv[12], unsigned char(*)  tag[16]  )

inline

Encrypts data with GCM mode and gets an authentication tag.

Parameters

[in,out]	data	Input data and output buffer. This buffer is replaced with encrypted data.
[in]	data_size	data size
[in]	aadata	Additional Authenticated data
[in]	aadata_size	aadata size
[in]	key	Cipher key
[in]	key_size	Cipher key size. This value must be 16 (128-bit), 24 (192-bit), or 32 (256-bit).
[in]	iv	Initialization vector
[out]	tag	Calculated authentication tag data

Returns

kErrorOk

kErrorInvalidKeySize