phytoremediation. The use of trees to take up chemicals, binding some of the material in an inert form with the tree, and converting some of it to other substances, possibly even breaking it down into the normal end product of a tree's chemical processes.pinnate.hytoremediation. The use of trees to take up chemicals, binding some of the material in an inert form with the tree, and converting some of it to other substances, possibly even breaking it down into the normal end product of a tree's chemical processes.
Electronic signatures, or e-signatures, refer broadly to any electronic process that indicates acceptance of an agreement or a record. The term digital signature is frequently used to refer to one specific type of electronic signature. 1  Typical e-signature solutions use common electronic authentication methods to verify signer identity, such as email, corporate IDs, or a phone PIN. 2  Digital signatures use a specific type of electronic signature.
The signature algorithm can be, among others, the NIST standard DSA, using DSA and SHA-1. The DSA algorithm using the SHA-1 message digest algorithm can be specified as. A Signature object can be used to generate and verify digital signatures. There are three phases to the use of a Signature object for either signing data or verifying a signature: 1  Initialization, with either. 2  a public key, which initializes the signature for verification (see initVerify), or.