Microsoft.AspNetCore.DataProtection.Abstractions Helpful extension methods for data protection APIs. Creates an given a list of purposes. The from which to generate the purpose chain. The list of purposes which contribute to the purpose chain. This list must contain at least one element, and it may not contain null elements. An tied to the provided purpose chain. This is a convenience method which chains together several calls to . See that method's documentation for more information. Creates an given a list of purposes. The from which to generate the purpose chain. The primary purpose used to create the . An optional list of secondary purposes which contribute to the purpose chain. If this list is provided it cannot contain null elements. An tied to the provided purpose chain. This is a convenience method which chains together several calls to . See that method's documentation for more information. Retrieves an from an . The service provider from which to retrieve the . An . This method is guaranteed never to return null. If no service exists in . Retrieves an from an given a list of purposes. An which contains the from which to generate the purpose chain. The list of purposes which contribute to the purpose chain. This list must contain at least one element, and it may not contain null elements. An tied to the provided purpose chain. This is a convenience method which calls then . See those methods' documentation for more information. Retrieves an from an given a list of purposes. An which contains the from which to generate the purpose chain. The primary purpose used to create the . An optional list of secondary purposes which contribute to the purpose chain. If this list is provided it cannot contain null elements. An tied to the provided purpose chain. This is a convenience method which calls then . See those methods' documentation for more information. Cryptographically protects a piece of plaintext data. The data protector to use for this operation. The plaintext data to protect. The protected form of the plaintext data. Cryptographically unprotects a piece of protected data. The data protector to use for this operation. The protected data to unprotect. The plaintext form of the protected data. Thrown if is invalid or malformed. An interface that can be used to create instances. Creates an given a purpose. The purpose to be assigned to the newly-created . An IDataProtector tied to the provided purpose. The parameter must be unique for the intended use case; two different instances created with two different values will not be able to decipher each other's payloads. The parameter value is not intended to be kept secret. An interface that can provide data protection services. Cryptographically protects a piece of plaintext data. The plaintext data to protect. The protected form of the plaintext data. Cryptographically unprotects a piece of protected data. The protected data to unprotect. The plaintext form of the protected data. Thrown if the protected data is invalid or malformed. Provides information used to discriminate applications. This type supports the data protection system and is not intended to be used by consumers. An identifier that uniquely discriminates this application from all other applications on the machine. Determines whether an exception must be homogenized by being wrapped inside a CryptographicException before being rethrown. The payload was invalid. The purposes collection cannot be null or empty and cannot contain null elements. An error occurred during a cryptographic operation. No service for type '{0}' has been registered. No service for type '{0}' has been registered. Invalid {0}, {1} or {2} length. Malformed input: {0} is an invalid input length. Invalid {0}, {1} or {2} length. Malformed input: {0} is an invalid input length. Contains utility APIs to assist with common encoding and decoding operations. Decodes a base64url-encoded string. The base64url-encoded input to decode. The base64url-decoded form of the input. The input must not contain any whitespace or padding characters. Throws if the input is malformed. Decodes a base64url-encoded substring of a given string. A string containing the base64url-encoded input to decode. The position in at which decoding should begin. The number of characters in to decode. The base64url-decoded form of the input. The input must not contain any whitespace or padding characters. Throws if the input is malformed. Decodes a base64url-encoded into a byte[]. A string containing the base64url-encoded input to decode. The position in at which decoding should begin. Scratch buffer to hold the s to decode. Array must be large enough to hold and characters as well as Base64 padding characters. Content is not preserved. The offset into at which to begin writing the s to decode. The number of characters in to decode. The base64url-decoded form of the . The input must not contain any whitespace or padding characters. Throws if the input is malformed. Gets the minimum char[] size required for decoding of characters with the method. The number of characters to decode. The minimum char[] size required for decoding of characters. Encodes using base64url encoding. The binary input to encode. The base64url-encoded form of . Encodes using base64url encoding. The binary input to encode. The offset into at which to begin encoding. The number of bytes from to encode. The base64url-encoded form of . Encodes using base64url encoding. The binary input to encode. The offset into at which to begin encoding. Buffer to receive the base64url-encoded form of . Array must be large enough to hold characters and the full base64-encoded form of , including padding characters. The offset into at which to begin writing the base64url-encoded form of . The number of bytes from to encode. The number of characters written to , less any padding characters. Get the minimum output char[] size required for encoding s with the method. The number of characters to encode. The minimum output char[] size required for encoding s. Specifies that null is allowed as an input even if the corresponding type disallows it. Specifies that null is disallowed as an input even if the corresponding type allows it. Specifies that an output may be null even if the corresponding type disallows it. Specifies that an output will not be null even if the corresponding type allows it. Specifies that an input argument was not null when the call returns. Specifies that when a method returns , the parameter may be null even if the corresponding type disallows it. Initializes the attribute with the specified return value condition. The return value condition. If the method returns this value, the associated parameter may be null. Gets the return value condition. Specifies that when a method returns , the parameter will not be null even if the corresponding type allows it. Initializes the attribute with the specified return value condition. The return value condition. If the method returns this value, the associated parameter will not be null. Gets the return value condition. Specifies that the output will be non-null if the named parameter is non-null. Initializes the attribute with the associated parameter name. The associated parameter name. The output will be non-null if the argument to the parameter specified is non-null. Gets the associated parameter name. Applied to a method that will never return under any circumstance. Specifies that the method will not return if the associated Boolean parameter is passed the specified value. Initializes the attribute with the specified parameter value. The condition parameter value. Code after the method will be considered unreachable by diagnostics if the argument to the associated parameter matches this value. Gets the condition parameter value. Specifies that the method or property will ensure that the listed field and property members have not-null values. Initializes the attribute with a field or property member. The field or property member that is promised to be not-null. Initializes the attribute with the list of field and property members. The list of field and property members that are promised to be not-null. Gets field or property member names. Specifies that the method or property will ensure that the listed field and property members have not-null values when returning with the specified return value condition. Initializes the attribute with the specified return value condition and a field or property member. The return value condition. If the method returns this value, the associated parameter will not be null. The field or property member that is promised to be not-null. Initializes the attribute with the specified return value condition and list of field and property members. The return value condition. If the method returns this value, the associated parameter will not be null. The list of field and property members that are promised to be not-null. Gets the return value condition. Gets field or property member names.