Abstract: Provided is a method for preparing gold nanorods using a reducing agent mixture, which includes: a step of preparing a seed solution containing the seed particles of gold nanoparticles; and a step of growing the seeds of the gold nanoparticles into nanorods by adding a growth solution containing ascorbic acid (AA) and hydroquinone (HQ) to the prepared seed solution, wherein the ascorbic acid first reduces the seeds of the gold nanoparticles.

Abstract: A first electronic device includes: a wireless communication circuit configured to communicate with a second electronic device; a memory storing instructions; and a processor operatively connected to the wireless communication circuit and the memory, and configured to the execute the instructions, wherein the instructions, when executed by the processor, cause the first electronic device to: receive, through the wireless communication circuit, a certificate chain request that is transmitted from the second electronic device based on receiving a user input of a request regarding a security function through the first electronic device or the second electronic device, wherein the certificate chain request includes a challenge value; form a certificate chain including the challenge value and a unique identifier of the first electronic device; and transmit the certificate chain to the second electronic device through the wireless communication circuit to cause the second electronic device to verify validity of the

Abstract: A semiconductor cleaning composition includes: a hydrophobic polymer, an organic acid; and a solvent, wherein the hydrophobic polymer includes a first allotrope and a second allotrope, wherein the first allotrope is nonpolar, wherein the second allotrope is polar, and wherein the second allotrope is about 5% to about 20% of the hydrophobic polymer.

Abstract: Provided is a method for preparing gold nanorods using a reducing agent mixture, which includes: a step of preparing a seed solution containing the seed particles of gold nanoparticles; and a step of growing the seeds of the gold nanoparticles into nanorods by adding a growth solution containing ascorbic acid (AA) and hydroquinone (HQ) to the prepared seed solution, wherein the ascorbic acid first reduces the seeds of the gold nanoparticles.

Abstract: An electronic device and method of operating an electronic device are provided. The electronic device includes an integrated circuit including at least one key, at least one processor including the integrated circuit, and a memory operatively connected to the at least one processor. The memory stores instructions that, when executed, cause the at least one processor to obtain at least one piece of hardware information related to the electronic device, generate a signed certificate signing request including the at least one piece of hardware information, based on the at least one key, transmit the signed certificate signing request to an external electronic device, receive an attestation certificate generated based on the signed certificate signing request, from the external electronic device, and store the received attestation certificate in the memory.

Abstract: An electronic device and method of operating an electronic device are provided. The electronic device includes an integrated circuit including at least one key, at least one processor including the integrated circuit, and a memory operatively connected to the at least one processor. The memory stores instructions that, when executed, cause the at least one processor to obtain at least one piece of hardware information related to the electronic device, generate a signed certificate signing request including the at least one piece of hardware information, based on the at least one key, transmit the signed certificate signing request to an external electronic device, receive an attestation certificate generated based on the signed certificate signing request, from the external electronic device, and store the received attestation certificate in the memory.

Abstract: A method and an apparatus for detecting a tampered application are provided. The method of detecting a tampered application includes acquiring a package of an application, extracting and installing a first execution code from the acquired package of the application, extracting a second execution code from the package of the application when an execution command of the application is received after the first execution code is installed, and performing a preset operation when the second execution code differs from the first execution code.

Abstract: A method and apparatus for protecting the integrity of a mobile terminal are provided. The mobile terminal includes a secure world for preventing unauthorized access to resources, and a normal world other than the secure world. The integrity protection method for the mobile terminal includes sensing a power-on of the mobile terminal, verifying, by a trusted entity in the normal world, the integrity of a first subsequent entity, and sending, when an integrity breach is detected in the first subsequent entity, by the trusted entity, a modification indication signal to the secure world.