Abstract: A key recovery information distribution device is provided between a recoverer device and a key recovery device, recovers a data key for the recoverer device, and reduces the load of the recoverer device. Data is encrypted using the data key and stored with key recovery information. The recoverer device which decrypts the encrypted data distributes the key recovery information to key recovery devices through the key recovery information distribution device to recover key information. A recoverer is authenticated directly between the key recovery device and the recoverer device, and then the key information is transmitted to the recoverer device, and the recoverer device recovers the data key.

Abstract: An encryption key processing system includes a user terminal system which uses a key and a sub-system for holding information regarding the user terminal system, the sub-system generating predetermined public information, secret information corresponding to the public information and a secret key dependent on an identifier of said user terminal system, sending a secret key to the user terminal system in secret and the user terminal system generating and using a key and necessary information based on a secret key and public information received from the sub-system.

Abstract: A portable facsimile equipment in which document data to be transmitted can be displayed on an LCD display. When it is desired for a communication module to transmit document data obtained through a document module or a scanner module, the document data to be transmitted can be displayed on the LCD display. When it is desired to display image data read out by a scanner and stored in a RAM on the LCD display; the image data having a resolution of 8 lines/mm read out by the scanner and stored in the RAM is converted to data having a resolution of 3 lines/mm for display thereof on the LCD display. Further, the communication module performs its communication with a wired line through a modular connector provided at a side of an LCD board, and the received information is displayed on the LCD display.

Abstract: Electronic signature apparatus and method provide an electronic signature that can be created only by a signer, but cannot be used for other than the signature object document to be processed, and that can be verified and authenticated as an image. Since the verified result is an image, such as a print of a seal and a signature, the verifier can easily verify the validity of the image. In addition, since a signature image and a signature object document may separately be processed, combined, and decomposited upon decryption, they can effectively be used for a printed signature.

Abstract: In apparatus for performing signature verification for an input document on which at least one digital signature is put by at least one signer assigned with a signer's user ID code, an inputting section inputs the signature document. A user ID identifying section identifies the signer's user ID code in the input document to produce an identified user ID code indicative of the signer's user ID code. A user verification key holding unit preliminarily holds user verification keys for respective user ID codes to produce an identified verification key which is one of the user verification keys that corresponds to the identified user ID code. A signature verifying unit verifies the digital signature in the input document by using the identified verification key to produce a signature verification result. A verification result indicator message creating unit creates the verification result indicator message indicative of the signature verification result.

Abstract: Herbicidal benzo-fused cyclic compounds of the formula ##STR1## wherein Q is ##STR2## Y is O or S, W is ##STR3## T is O, S, --NH-- or ##STR4## and R.sup.4 may represent, together with T, chlorine,Z is O or S,X is hydrogen or halogen,n is 0 or 1 andR is C.sub.3-6 cycloalkyl, and optionally substituted 5-membered heterocyclic group or an optionally substituted 6-membered heteroaromatic group which contains one to three nitrogen atoms,and salts thereof.

Abstract: Herbicidal compounds of the formula ##STR1## in which X denotes an oxygen atom or sulfur atom,Y denotes a hydrogen atom or halogen atom,Z denotes an oxygen atom or sulfur atom,n denotes 0 to 1, andR denotes hydrogen, an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 4 carbon atoms or an alkynyl group having 2 to 4 carbon atoms.Intermediates of the formula ##STR2## are also new.

Abstract: Herbicidal 1-phenylpyrroles of the formula ##STR1## wherein each R.sup.1 represents methyl or together form a tetramethylene group,R.sup.2 represents hydrogen, C.sub.1-6 alkyl, cyclopropylmethyl, C.sub.1-4 alkoxy-C.sub.1-2 alkyl, C.sub.1-4 alkylthio-C.sub.1-2 alkyl, C.sub.1-4 alkylsulfinyl-C.sub.1-2 alkyl, C.sub.1-4 alkylsulfonyl-C.sub.1-2 alkyl, benzyl or phenylethyl which are optionally substituted by halogen, C.sub.3-4 alkenyl, C.sub.3-4 alkynyl, C.sub.3-4 haloalkenyl, C.sub.2-3 cyanoalkyl or carbmoylmethyl, thiocarbamoylmethyl, trimethylsilylmethyl, CH.sub.2 COOR.sup.3, ##STR2## or a C.sub.1-2 alkyl group which is connected with an optionally substituted 5-6 membered heterocyclic group, whereinR.sup.3 represents C.sub.1-6 alkyl or C.sub.5-6 cycloalkyl,R.sup.4 represents hydrogen, methyl, ethyl or cyclopropyl,R.sup.5 represents OR.sup.6 or N(CH.sub.3).sub.2, in whichR.sup.6 represents hydrogen, C.sub.1-5 alkyl, allyl, propargyl or benzyl, andn represents 0 to 1.

Abstract: Herbicidally active pyrroles of the formula ##STR1## wherein R.sup.1 represents C.sub.1-4 alkyl, or one R.sup.1 together with the other R.sup.1 forms tetramethylene or butenylene,X represents hydrogen or halogen,Y represents O or S,n represents 0 or 1,R.sup.2 represents hydrogen or an organic radical.

Abstract: Herbicidal benzothiazolones of the formula ##STR1## wherein X represents hydrogen or halogen, R.sup.1 represents hydrogen, alkyl, various organic radicals, ##STR2## in which R.sub.2, R.sup.4, R.sup.5 and R.sup.6 each is hydrogen or an organic radical, and R.sup.3 is alkyl, cycloalkyl or optionally halo-substituted phenyl.

Abstract: Herbicidal 2,5-dihydropyrroles of the formula ##STR1## wherein A represents hydroxy, halogen, an alkylcarbonyloxy group having alkyl with 1 to 4 carbon atoms optionally substituted by halogen, or an alkylsulfonyloxy group having 1 to 4 carbon atoms optionally substituted by halogen,X represents CH or N, andR.sup.1, R.sup.2 and R.sup.3 each represent hydrogen, or an alkyl group having 1 to 4 carbon atoms optionally substituted by halogen, with the proviso that all of R.sup.1, R.sup.2 and R.sup.3 do not simultaneously represent hydrogen,or R.sup.2 and R.sup.3, together with the carbon atom to which they are bonded, may form an alicyclic ring with 3 to 6 carbon atoms.Intermediates of the formula ##STR2## are also new.

Abstract: Herbicidal benzo-fused cyclic compounds of the formula ##STR1## wherein Q is ##STR2## Y is O or S, W is ##STR3## T is O, S, --NH-- or ##STR4## and R.sup.4 may represent, together with T, chlorine,Z is O or S,X is hydrogen or halogen,n is 0 or 1 andR is C.sub.3-6 cycloalkyl, an optionally substituted 5-membered heterocyclic group or an optionally substituted 6-membered heteroaromatic group which contains one to three nitrogen atoms,and salts thereof.

Abstract: Herbicidally active novel 2,5-dihydropyrroles of the formula ##STR1## wherein R.sup.1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R.sup.2 and R.sup.3 each represent an alkyl group having 1 to 4 carbon atoms or a haloalkyl group having 1 to 4 carbon atoms or together may form a C.sub.2 -C.sub.6 alkylene group which may be substituted by halogen, and R represents a hydroxy group, a mercapto group, a halogen atom, an amino group or a group of the formula --O--W in which W represents an alkylcarbonyl, a halogenoalkylcarbonyl, an alkoxycarbonyl or a halogenoalkoxycarbonyl group each having 1 to 4 carbon atoms in the alkyl group, an alkylsulfonyl or a halogenoalkylsulfonyl group each having 1 to 4 carbon atoms in the alkyl group or a di-C.sub.1 -C.sub.4 -alkylamino sulfonyl group.

Abstract: Herbicidally active novel 2,5-dihydropyrroles of the formula ##STR1## wherein R.sup.1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R.sup.2 and R.sup.3 each represent an alkyl group having 1 to 4 carbon atoms or a haloalkyl group having 1 to 4 carbon atoms or together may form a C.sub.2 -C.sub.6 alkylene group which may be substituted by halogen, and R represents a hydroxy group, a mercapto group, a halogen atom, an amino group or a group of the formula --O--W in which W represents an alkylcarbonyl, a halogenoalkylcarbonyl, an alkoxycarbonyl or a halogenoalkoxycarbonyl group each having 1 to 4 carbon atoms in the alkyl group, an alkylsulfonyl or a halogenoalkylsulfonyl group each having 1 to 4 carbon atoms in the alkyl group or a di-C.sub.1 -C.sub.4 -alkylamino sulfonyl group.

Abstract: Novel benzoxazines of the formula (I) ##STR1## wherein X is hydrogen or halogen,R.sup.1 is hydrogen or C.sub.1 -C.sub.2 -alkyl,R.sup.2 is cyano, trimethylsilyl, trimethylsilylmethoxycarbonyl, C.sub.1 -C.sub.4 -alkylthio or cyclopropyl andQ is ##STR2## and the use of the novel compounds as herbicides, and intermediates for the preparation of the novel benzoxazines.